


















                                 Astronomy Assistant
                                 Astronomy Assistant
                                 Astronomy Assistant
                                     Version 1.0
                                     Version 1.0
                                     Version 1.0
                                         By
                                         By
                                         By
                                   Allen Breedlove
                                   Allen Breedlove
                                   Allen Breedlove



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               Astronomy Assistant                               
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               Astronomy Assistant                               
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                                 Astronomy Assistant
                                 Astronomy Assistant
                                 Astronomy Assistant
                                         Is
                                         Is
                                         Is
                                      Shareware
                                      Shareware
                                      Shareware
                                 Distribution is Ok
                                 Distribution is Ok
                                 Distribution is Ok
                                    A Donation of
                                    A Donation of
                                    A Donation of
                                        20.00
                                        20.00
                                        20.00
                           If You Find This Program Useful
                           If You Find This Program Useful
                           If You Find This Program Useful
                                       Send to
                                       Send to
                                       Send to
                                   Allen Breedlove
                                   Allen Breedlove
                                   Allen Breedlove
                               2170 Hunters Cove Drive
                               2170 Hunters Cove Drive
                               2170 Hunters Cove Drive
                          Lawrenceville,  Georgia.   30244
                          Lawrenceville,  Georgia.   30244
                          Lawrenceville,  Georgia.   30244

                                  Direct Inquiries
                                  Direct Inquiries
                                  Direct Inquiries
                                         To
                                         To
                                         To
                          Compuserve                  Genie
                          Compuserve                  Genie
                          Compuserve                  Genie
                           73247,2033                A.Breedlove
                           73247,2033                A.Breedlove
                           73247,2033                A.Breedlove






























               ____________________________________________________
               Copy Right 1992 By Allen Breedlove
               09/06/92



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                              Table Of Contents
                              Table Of Contents
                              Table Of Contents






               Overview                                        4
               System Requirements                             6
               System Setup                                    7
               Database File Functions                         9
               Create File Index                               10
               Set Index Function                              12
               Record Retrieval                                13
               Update Dictionary                               16
               Report Generator                                18
               Creating A Report                               19
               Multiple Parameters                             22
               Time Functions                                  24
               Coordinate Functions                            26
               Sun/Moon                                        26
               Planets                                         28
               Functions                                       30
               Parameters                                      32
               Trouble Shooting                                33
               Appendices I                                    35
               Alphabetical Index                              38

























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               Copy Right 1992 By Allen Breedlove
               09/06/92



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               ________
               Overview
               ________
               Overview
               ________
               Overview


               Welcome to Astronomy Assistant version 1.0. Astronomy
               Assistant was rewritten for several reasons.  The first
               task was to make it more user friendly.  Adding  a pull
               down menu system  helped correct this problem.  These
               included the addition of mouse support and pull down
               menus.  I used "Quick Windows Advanced"  for these
               functions.  Now all you need to do is point and click if
               you have a mouse.  The keyborad can access all the
               functions as well. Use the "Tab" and "Arrow" keys to move
               between menu headings and menu items.

               The database functions needed  improving.  I used ISAM
               data structures for the star and object files.  This
               reduced the file commands and the complexity of
               maintaining the data files.  As a result, this reduced
               the sorting times and the sorting levels increased to
               five.

                The  solar, lunar, and planetary functions were
               rewritten to improve the computational accuracy of the
               result. Most planetary positions are accurate to within
               one minute. The following are enhancements or
               improvements to Astronomy Assistant 1.0

               1.   Rewritten user interface
               2.   Pull down menus
               3.   Rewritten database functions
               4.   Uses ISAM data files
               5.   Up to 5 levels of sorting on the databases
               6.   Popup data display windows
               7.   Expanded star database
               8.   Expanded object database
               9.   Rewritten mathematical functions for calculations
               10.  Additional information in planetary calculations
               11.  Addition of an "RPN"  calculator
               12.  Expandable star and object databases
               13.  Addition of data dictionaries
               14.  Addition of report generating functions










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               Copy Right 1992 By Allen Breedlove
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               ________
               Overview
               ________
               Overview
               ________
               Overview


               All the menu items use dialog boxes.  When you select an
               item from the menu a dialog box pops up and asks for the
               information that is necessary to perform that function.
               Each question has its on box to enter the data in.  Some
               questions have default entries.

               The date and time have three possible values. The first
               is what you manually enter from the keyboard.  The second
               is the "C" option.  This inserts the current date or time
               into the entry box.  The third is "D" default.  This is
               setup by you as the default date or time.  If you have
               several calculations that require the same date or time
               then, you can change the default date or time to the
               value you need for these calculations.  It's mainly a
               time saver.  The default right ascension and declination
               work the same way.

               The latitude and longitude have default settings as well.
               They automatically appear as values in the entry box.  If
               you want to keep the value then, do nothing.  If you want
               to change the value then, just over type it with a new
               value.

               The response dialog window also has the option to route
               the output of the calculation to a text file.  If you
               want this to happen, just enter a "Y"  for the route to
               file option.

               You can route the information display screen to the
               printer by choosing the "Print" push-button from the
               information display window.  This option can also be set
               on a global basis. See the "Options" menu item
               description.















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               Copy Right 1992 By Allen Breedlove
               09/06/92



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               ___________________
               System Requirements
               ___________________
               System Requirements
               ___________________
               System Requirements



               1.   Astronomy   Assistant   will   run  on  color  or
                    monochrome monitors

               2.   Astronomy  Assistant  requires  a 286 or better
                    CPU to run on

               3.   The star and object file are both  over 1 meg in
                    size.  I  recommend  using  a hard  disk for the
                    database functions. It will still run off a floppy
                    disk if  you do  not  include the  data files. This
                    means that you must build your own.

               4.   You do not  need a  math  CO-processor but it
                    will use one if it is available

               5.   Set files to at least 10 or better in the config
                    .sys file

               6.   Astronomy  Assistant  does  not  require   EMS
                    memory.



               These are modest system requirements.




















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               Copy Right 1992 By Allen Breedlove
               09/06/92



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               ____________
               System Setup
               ____________
               System Setup
               ____________
               System Setup


               To setup Astronomy Assistant, unzip all the files into
               one directory.  Next,  run the "Astsetup" program.  This
               program lets you setup default values for the following
               items:

                         1.   Latitude  ( hh:mm:ss)
                         2.   Longitude ( +-hh:mm:ss )
                         3.   Default Right Ascension ( hh:mm:ss )
                         4.   Default Declination ( +-hh:mm:ss )
                         5.   Default Date ( mm/dd/yyyy )
                         6.   Default Time  ( hh:mm:ss )
                         7.   Video Type  ( Mono or Color )


               Note also that you can change these values  from the
               "Parameters" options inside Astronomy Assistant.

               After you run the "Astsetup" program,  type in "ASTRO" at
               the DOS prompt.  A message appears informing you that the
               ISAM data files are opened.  When this message
               disappears, you are ready to go.

               The star and object databases have two  indexes.
               Staridx1 and Objectidx1 should be the default indexes.
               These indexes are the key to the data files.  This means
               that when you type in a star or object name, this table
               is used to lookup that name.  If you delete it you can
               re-create it by using the "create index" option and
               creating the index on the first field of each file.  This
               is the star name or object name field.  The index names
               must remain the same if you want them used as the default
               indexes.  Otherwise you must manually select another
               index from the change index function.

               If the screen appears garbled after you start Astronomy
               Assistant, it is probably due to an incorrect video flag.
               On startup Astronomy Assistant tries to determine what
               type of monitor you have.  Sometimes this cannot be
               determined by the program.  If your  video  type  is
               blank  then Astronomy





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               Copy Right 1992 By Allen Breedlove
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               ____________
               System Setup
               ____________
               System Setup
               ____________
               System Setup



               Helper tries to determine what video type you have.  If
               you enter Mono or Color as values,  then this overrides
               the auto-detect mode and forces the entered value as the
               current video mode.









































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               _______________________
               Database File Functions
               _______________________
               Database File Functions
               _______________________
               Database File Functions


               Astronomy Assistant contains four file commands for file
               operations:

                    1.    Set File

                    2.   Create File Index

                    3.   Set Index

                    4.   Delete Index



               _________________
               Set File Function
               _________________
               Set File Function
               _________________
               Set File Function



               Astronomy Assistant has two data files: Star.mdb that
               contains star record information. The second is
               Object.mdb and contains information of objects.  Since
               Isam files are used, action only takes place on one file
               at any one time.  This is due to the way PDS uses the
               index files for table lookup.  If you want to retrieve a
               star record, then you must use an index associated with
               the "Star.mdb" file.  Only one index per date file can be
               current at any one time.

               Most of the file switching is automatic.  The only time
               you need to use the "Set File" command is to create a new
               index and produce reports.

               To change the file setting just move the mouse cursor to
               the file you want to make current.  Click the right mouse
               button.  The selected file is now the current file. Move
               the mouse cursor to "Exit" and click. Note also that you
               can use the tab key to change fields or the arrow keys to
               move between fields.









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               Copy Right 1992 By Allen Breedlove
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               _________________
               Create File Index
               _________________
               Create File Index
               _________________
               Create File Index




               Use the Create File Index command  to change the order of
               the file.  An index is a sorted list of all the star or
               object records.  The order depends on what you select as
               the index.

               The first step in creating an index is to determine what
               file you want to create the index on.  Use the "Set File"
               command to make the appropriate file current.  Next
               choose the "Create File Index" option from the file's
               menu.

               The "Create Index" window pops up.  On the bottom right
               side of the window is the name of the current file.  On
               the left side of the window is a pick list.  From this
               list you pick the data fields that you want to use in
               creating the index.  Move the mouse cursor to the field
               you want and press the left mouse button.  A check mark
               appears to the left of the field name.  This shows that
               it is selected as a parameter for index creation.  It is
               important to note the order in which you choose items
               because that is the order in which the index is sorted.
               You can choose up to five items.

               When you create an index for record retrieval via star or
               object record, use only one field.  If you are creating a
               sorted index for report generation, you can use up to
               five fields.  For instance, if you want to create a
               report  sorted by constellation by magnitude then select
               the constellation field first and the vmag field second.
               A check mark appears by each field name you select.  This
               tells the index processor to create a sorted index that
               is first sorted by the constellation name.  Then each
               star under the constellation name is then sorted by
               magnitude.  Multilevel sorts are useful in producing
               printed reports or reports sent to the screen.









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               Copy Right 1992 By Allen Breedlove
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               _________________
               Create File Index
               _________________
               Create File Index
               _________________
               Create File Index



               Next you must decide what you want to call the index.
               Enter the index name in the index name box.  You can move
               to this field by placing the mouse cursor in the index
               name box and pressing the left mouse button. You also can
               use the tab key to move to the name field.

               Once you have entered the index name, press the tab key
               and move to the next entry field.  This field contains
               the description of the index.  It is useful to enter the
               field names used to create the index (in checked order).
               This is saved with the index name as a description to the
               associated index.

               Next either tab or move the mouse cursor to the Create
               Index push-button.  Press enter or press the left mouse
               button.  The index is now  created.  The time it takes to
               create an index is dependent on the type of system you
               have.  I have a 386 33mhz system and it sorts the star
               database in under a minute.  This is much faster than the
               previous version of Astronomy Assistant.

               To exit this function choose the "Exit" push-button at
               the bottom of the window.  When you want to use this
               index, you must use the "Set Index" function to make it
               the current index.






















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               Copy Right 1992 By Allen Breedlove
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               __________________
               Set Index Function
               __________________
               Set Index Function
               __________________
               Set Index Function


               The "Set Index" function is used to change the current
               index.  When this function is selected a Popup window
               appears showing  the currently set index,  as well as,
               the current file.  On the left side of the window is a
               pick list box.  The left side shows the index name and
               the right side shows you the description of the index.
               Use the mouse or the up and down arrow keys to select the
               index you want to use.  Next, select the "Set Current
               Index" push-button to make your selection the current
               index.  Select the "Cancel" push-button to exit this
               function.  The index for the current file is now changed.

               Use this function with the report generator.
































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               Copy Right 1992 By Allen Breedlove
               09/06/92



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               ________________
               Record Retrieval
               ________________
               Record Retrieval
               ________________
               Record Retrieval


               Database operations consist of all the functions under
               the database menu option.  These include:

                         1.   Retrieve Star Record

                         2.   Retrieve Object Record

                         3.   Update Dictionary

                         4.   Report Generation

               Retrieve Star / Object are used to retrieve individual
               data records.  The data files are keyed of the 1st data
               field that is the star or object name.  To retrieve a
               record just enter the star or object name.  If you prefer
               to use a descriptive name, then place this name in the
               1st data field.  Otherwise, when you enter a descriptive
               name it will not find the star unless you are using a
               different index.

               If the record is found, the data is displayed on the
               screen.  If it is not found then, you are given the
               option of creating a record item.

               The star of object screen has four options. These are:

               1.   Save Record.   This saves the data record
                                   to the either the star or
                                   object data file.  It also
                                   updates the current index
                                   of the file as well.

               2.   Delete Record  This function removes the
                                   data record for the data
                                   file.  It also removes the
                                   entry from the index  as
                                   well.








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               Copy Right 1992 By Allen Breedlove
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               ________________
               Record Retrieval
               ________________
               Record Retrieval
               ________________
               Record Retrieval



               3.   Reference File If you have a   reference   file
                                   (ascii text file)  associated
                                   with the data record, then
                                   you can  display the file to
                                   the   screen   for   viewing.
                                   The        row,        pageup,
                                   page down     keys   work.

               4.   Exit Inquiry   This exits the inquiry part
                                   of the program.

               The arrow keys, tab key, and mouse are used to move
               between fields.  Note the format of the right ascension
               and declination values.  Take care to enter your values
               the same way.

               I tried to include a range of items that would allow for
               the most varied data entry needs.  If you have other
               fields that you want to see added, let me know. The
               following are the fields that are included in the star
               and object data records:

                         Star Record

                1.  Star Name
                2.  Alternate Name
                3.  ADS
                4.  Spectral Type
                5.  Luminosity
                6.  Color
                7.  Constellation
                8.  Distance
                9.  Right Ascension
               10.  Declination
               11.  Companion
               12.  Companion Magnitude
               13.  Separation
               14.  Visual Magnitude
               15.  BV Magnitude
               16.  MV Magnitude
               17.  Position Angle






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               Copy Right 1992 By Allen Breedlove
               09/06/92



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               ________________
               Record Retrieval
               ________________
               Record Retrieval
               ________________
               Record Retrieval



               18.  Year Cataloged
               19.  Sky Atlas Location
               20.  Uranometria Location
               21.  Reference File
               22.  Notes
               23.  Notes


               The data fields for the object record are:

                1.  Object Name
                2.  Alternate Name
                3.  Description
                4.  Constellation Name
                5.  Separation
                6.  Diameter
                7.  Type
                8.  Right Ascension
                9.  Declination
               10.  Period
               11.  Position Angle
               12.  Companion
               13.  Visual Magnitude
               14.  Magnitude Range
               15.  Reference 1
               16.  Reference 2
               17.  Notes 1
               18.  Notes 2

               When you type in the name of a star or object that does
               not exist, you are informed that this is a new entry.
               You have the option to proceed or exit.  If you proceed
               you can enter the information.  Pay particular attention
               to the right ascension and declination entries.  These
               must be entered in hh:mm.dd. (hours: and decimal minutes)

               When you have entered all the information then choose the
               "Save" push-button and your new record is added to the
               appropriate database.

               If you want to delete a record then retrieve the record
               and choose the "Delete Record" push-button.  Once it's
               gone it's gone and must be re-entered again if you want
               it back.



               ____________________________________________________
               Copy Right 1992 By Allen Breedlove
               09/06/92



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               _________________
               Update Dictionary
               _________________
               Update Dictionary
               _________________
               Update Dictionary



               The "Update Dictionary" option provides you with a way to
               access individual fields within the star or object data
               record.  When you select this option, a window pops up.
               In the left side of the window is a pick list that
               displays either the star or object field names. The
               information box to the right displays the current file
               name.

               When a field name is selected you can change three items
               associated with each field.  These three items are:

               1.   Column Header. This is the column heading
                                   that is displayed either on
                                   the   screen   or   on   your
                                   printed report.  Each  field
                                   has   a   column    heading
                                   that  describes   what  the
                                   field information is.

               2.   Display Length This  number  tells   the
                                   report    engine     how
                                   many    characters    long
                                   each  field should be. This
                                   only     applies     to    the
                                   functions    in  the  report
                                   module    of     Astronomy
                                   Helper and not  to record
                                   retrieval.

               3.   Justification  This specifies whether the
                                   printed output   is left or
                                   right justified.












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               Copy Right 1992 By Allen Breedlove
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               _________________
               Update Dictionary
               _________________
               Update Dictionary
               _________________
               Update Dictionary



               While you cannot change the actual field name, you can
               change the way it appears on a printed report or screen
               output.

               Be sure and save the dictionary changes you made.
               Otherwise, the next time you use them they will have
               retained their old values.

               The screen output is limited to 64 characters across and
               about 800 lines.  If a line is more than 64 characters
               and is currently being output to the screen: It is
               truncated at 64.  Likewise, lines that are over the 800
               limited are not included for output to the screen.
               However, they will be output to the printer.

































               ____________________________________________________
               Copy Right 1992 By Allen Breedlove
               09/06/92



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               ________________
               Report Generator
               ________________
               Report Generator
               ________________
               Report Generator



               The "Report Generator" is used to produce reports from
               the star and object databases.  These reports can either
               be displayed on the screen or output to the printer.

               When this option is selected a Popup window appears.
               This window contains a lot of information and options.
               The left side of the window shows you the current file
               and index name.  Next to the file information box is a
               pick list box.  This contains all the data field names of
               the star or object record.

               Underneath the file information box is the options pick
               list box.  This contains a listing of actions that can be
               taken on a report listing. Next is the output control
               box.  You can direct where your finished report should be
               routed to.

               There are four push-button controls.  These allow you to
               cancel a report, execute a report, change the current
               index, or add a heading to a printed report.

               The add item parameters box is used to specify conditions
               on star or object field items.

               Lets take a look and see how this is used to produce a
               report.


















               ____________________________________________________
               Copy Right 1992 By Allen Breedlove
               09/06/92



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               _________________
               Creating A Report
               _________________
               Creating A Report
               _________________
               Creating A Report



               Suppose you wanted to create a report from the star file
               sorted by the constellation name and magnitude.  You also
               wanted the listing for every constellation that is
               greater than the "Orion" constellation. The first step
               you need to do is build the index.  Go to the files menu
               and select "Create Index." Select the constellation field
               name first, then select the magnitude field name second.
               Enter the name of the index and the description.  Chose
               the "Create Index" push-button.

               Next go the "Set Index" option and set the index you just
               created as the current index.

               Go back to the "Report Generator" function and notice
               that the current index and current file are correct.

               Since the star file was sorted by constellation, choose
               the record field "Constellation" as your first item.  You
               can choose magnitude second if you like.  Add any other
               record fields you like.  Remember, the screen only shows
               64 characters across.  The line length box adds up the
               characters on a line for you.

               You can select record items by either using the mouse and
               clicking on that item or using the up/down arrow keys to
               move the pointer and pressing the "Enter" key to make the
               selection.

               You can change controls with the mouse or by using the
               "Tab" key.














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               _________________
               Creating A Report
               _________________
               Creating A Report
               _________________
               Creating A Report



               Next you must add the parameter restrictions to the
               constellation field name.  Make the "Display Items" box
               active and highlight the "Constellation" field name and
               press enter.  Now you are in the "Add Item Parameters"
               entry field.  This function lets you assign restrictions
               to the constellation field.  Astronomy Assistant
               recognizes relational operators:

               1.   EQ   Equal to selected field

               2    GE   Greater than or equal to selected field

               3.   GT   Greater than selected field

               4.   LE   Less than or equal to selected field

               5.   LT   Less than selected field

               Selected field in this case is the constellation field.
               Use "GT" since you want to select everything greater than
               "Orion."  Next,  you must provide the "compare
               restriction."  In this case use "Orion."  The entry into
               the parameter box would look like this:

                    GT *ORION*

               Use the "*" as a delimiter.  Anything between the two
               asterisks is used as the comparing value against the
               constellation field.  Next, press the "Enter" key.  You
               are ready to generate the report.  Move the cursor to the
               "Execute Report" push-button and click the mouse or press
               the "Enter" key.

               The report automatically defaults to the screen for
               display.  If you want to send the report to the printer
               then, move the cursor to the "Output Control" and select
               the printer option.  If you want the report to go to a
               file then, select the file option and enter the file name
               you want to call it.






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               09/06/92



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               _________________
               Creating A Report
               _________________
               Creating A Report
               _________________
               Creating A Report



               If you set your printer up for compressed print, you can
               get 132 characters across on the printed page.

               The "Options" control box let you perform additional
               functions on sorted reports.  Other options let you add
               information to the printed report.  These options are:

               1.   Break First This  option  is  used with  a report
                              that   is  sorted by   a data field.  It
                              causes   a    break  in   the   output
                              when  the  sort  field   changes  its
                              value.   It   also  inserts  a  dashed
                              line   after   the  last   item   of the
                              previous value.

               2.   Break 2nd Same  as  the  "Break First" option
                              but   works   on  the   second sort
                              field of a multi-level sort.

               3.   Count First Used   in    conjunction   with  the
                              "Break First"  option; This  option
                              counts   the   number  of  records
                              within  each    break   section.  It
                              also prints this value underneath
                              the   dashed    line   when "Break
                              First" is used.

               4.   Convert UP  This   converts   all  the output to
                              upper case characters.

               5.   Create List This  creates a  file  listing of ID'S
                              that match the report parameters.
                              This   option  does not  produce a
                              printed result.











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               _________________
               Creating A Report
               _________________
               Creating A Report
               _________________
               Creating A Report



               6.   Page #    This  option  adds  a page number
                              to the report when  it is output to
                              the printer or a file.

               7.   Add Date  This adds the  current date to the
                              report  when  it  is  output to  the
                              printer.

               The "Add Header" push-button allows you to enter a header
               to each page of your report.  Select this option and type
               in a single heading line.  Choose the "Accept Header"
               push-button  and then execute the report.  If you do not
               want a heading then, choose the "Cancel Heading" push-
               button.



               ___________________
               Multiple Parameters
               ___________________
               Multiple Parameters
               ___________________
               Multiple Parameters



               Multiple parameters can be used for a single field.  As
               an example, lets use the constellation field that is
               highlighted in the "Display Options" list.

                    GE *ORION*; AND LE *PERSUS*

               This example would select all the records that have a
               constellation value greater than or equal to Orion and
               with a constellation value less than or equal to Persus.
               "And" in the above expression is used a connective and
               qualifier.  "Or" is another connective.  While "And"
               specifies a range, All the different constellations that
               are between Orion and Persus are included in the report.
               "Or" specifies an either or situation. If "Or" were used
               in the above example, only the records that have a value
               of Orion or Persus are selected for the report.










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               09/06/92



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               ___________________
               Multiple Parameters
               ___________________
               Multiple Parameters
               ___________________
               Multiple Parameters



               Notice that a space separates each element of the
               parameter line except the semicolon.  The semicolon is
               used to separate multiple parameters on a single field.
               Also notice  there is no semicolon following the last
               parameter in the above example.

               If the report is sent to the screen,  a Popup window
               appears.  The column headers are at the top of the
               window.  Another scrollable window opens and contains the
               data from the record items selected for the report.  A
               scroll bar is located on the right side of the window.
               If you are using a mouse then, you can place the cursor
               anywhere on the scroll bar and advance the listing by
               clicking the left mouse button.  Placing the cursor on
               the top or bottom border and clicking the left mouse
               button advances the listing by one line.

               If you are using the keyboard, then using the up/down
               arrow keys advances the listing by one line.  Using the
               "Page UP" and "Page Down" keys advances the listing by
               one page.

               Remember,  the screen listing is limited to about 800
               lines.  If you need more data then, create a separate
               report by using more parameters to limit the record
               selection.



















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               Copy Right 1992 By Allen Breedlove
               09/06/92



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               ______________
               Time Functions
               ______________
               Time Functions
               ______________
               Time Functions



               Time Functions comprise the third menu item.  These
               functions include the following:

               1.   Julian Date Conversion
                         This converts the " Julian Date"  back into
                         the calendar date.

               2.   Calendar Date Conversion
                         This  convert  the   calendar  date  into  the
                         "Julian Date." It also  returns the  "Ephemris
                         Date",  days   since    the   beginning  of  
                              the year, the number of days left in the
                         year, and Julian days since   the   beginning
                         of the  century.

               3.   Weekday Name
                         This  returns   the   day   name of the week.

               4.   Day Number Of Year
                         This   returns   the   elapsed  days since the
                         beginning of the year,

               5.   Local Time Conversion
                         This  function  converts  the local  time into
                         "Universal Time",  "Universal Sidereal Time",
                         and "Local Sidereal Time".

               6.   Universal Sidereal Time
                         This takes the "Universal Sidereal Time" and
                         converts  it  to "Universal Time"  and  "Local
                         Sidereal Time".

               7.   Local Sidereal Time
                         This converts  the  Local  Sidereal Time into
                         "Universal Time" and "Universal Time".









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               09/06/92



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               ______________
               Time Functions
               ______________
               Time Functions
               ______________
               Time Functions





               8.   Right Ascension To Hour Angle
                         This function converts the Right Ascension
                         into the corresponding hour angle. Enter
                         local date and time. The function converts
                         the time into Universal Time.

               9.   Hour Angle To Right Ascension
                         This  converts  the   hour  angle  into   the
                         corresponding Right Ascension.




































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               09/06/92



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               ____________________
               Coordinate Functions
               ____________________
               Coordinate Functions
               ____________________
               Coordinate Functions


               Coordinates are the fourth menu item.  These functions
               calculate corrections to coordinates and transform them
               into other coordinate systems.

               The following are correctional functions:

                    1.   Anomaly

                    2.   Nutation Correction

                    3.   Obliquity Correction

                    4.   Precession Correction



               The following are functions that convert from one
               coordinate system to a different coordinate system:


                    1.   Equatorial To Ecliptic

                    2.   Ecliptic To Equatorial

                    3.   Equatorial To Galactic

                    4.   Galactic To Equatorial

                    5.   Equatorial To Horizon.  Enter the time in
                         local time. The function converts the local
                         time into Universal time.

                    6.   Horizon To Equatorial


               These functions are selected using either the mouse or
               the keyboard.  Once selected, a dialog box pops up
               prompting for the necessary information.




               ________
               Sun/Moon
               ________
               Sun/Moon
               ________
               Sun/Moon


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               The "Sun/Moon" is the fifth menu item.  It provides
               functions for calculating various items of interest.

               1.   Moon Phases
                         This function calculates the various moon
                         phase instances.  It provides the month,
                         day name day year,  time (universal) and
                         the phase of the moon.  This is generally
                         accurate to within a minute.

               2.   Moon Position
                         This returns eleven pieces of information
                         including positional information, parallax,
                         semidiameter, distance, phase, rise and
                         setting times.

               3.   Eclipse Of Moon
                         This calculates the various instances of a
                         lunar eclipse. It returns the date, what type
                         of eclipse it is and the times. Overall it
                         calculates 13 pieces of information.

               4.   Sun Position
                         This function calculates the position of the
                         sun for a given date and time and
                         returns the true distance.

               5.   Eclipse Of Sun
                         This calculates the instances of a solar
                         eclipse.  It calculates seven pieces of
                         information on the particulars of a solar
               eclipse.

               6.   Star Rise and Set
                         Given specific parameters this function
                         tries to calculate the times of rise, transit
                         and setting of a star.  Parallax, and
                         refraction are not taken into account.
                         Returns universal and local times.















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               _______
               Planets
               _______
               Planets
               _______
               Planets



               This is the sixth menu item and contains calculations for
               the planets Mercury through Neptune.  Options include
               calculations for the orbital elements and planetary
               positions.  The orbital element calculations include:

                1.  Mean Longitude

                2.  Length Of Semi-Major Axis

                3   Eccentricity

                4.  Argument Of Perihelion

                5.  Longitude Of Ascending Node

                6.  Longitude Of Perihelion

                7.  Mean Anomaly

                8.  Eccentric Anomaly

                9.  True Anomaly

               10.  Radius Vector

               11.  Perihelion Distance

               12.  Aphelion Distance

               13.  Mean Daily Motion

               14.  Corrections For Longitude

               15.  Corrections For Latitude










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               _______
               Planets
               _______
               Planets
               _______
               Planets


               The planetary position calculations include the following
               items:


                1.  Distance To Planet
                2.  Distance From Sun
                3.  Solar Elongation
                4.  Phase Angle
                5.  Illumination Angle
                6.  Deficit Of Illumination
                7.  Planet Diameter
                8.  Visible Disk
                9.  Approximate Magnitude
               10.  Orientation Of Axis in Right Ascension
               11.  Orientation OF Axis in Declination
               12.  Null Meridian
               13.  Position Angle
               14.  Latitude Of The Earth
               15.  Heliocentric Coordinates (Longitude / Latitude)
               16.  Geocentric Coordinates (Longitude / Latitude)
               17.  Equatorial Coordinates
               18.  Rise Time
               19.  Transit Time
               20.  Setting Time

               The calculations for orbital elements or planetary
               positions can be corrected for perturbations.

               _____________________
               Perihelion / Aphelion
               _____________________
               Perihelion / Aphelion
               _____________________
               Perihelion / Aphelion


               This function calculates the date and time of planet
               passage through Perihelion and Aphelion. These are
               general dates and times and should not be considered
               exact.

               ________________
               Separation Angle
               ________________
               Separation Angle
               ________________
               Separation Angle


               Given the right ascension and declination, this function
               calculates the amout of separation between two objects.
               These object could be either two planets , two stars, or
               a star and a planet.  The result is in degrees.





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               09/06/92



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               _________
               Functions
               _________
               Functions
               _________
               Functions



               The functions menu allow you to make global changes to
               three functons.

               1.   Display Time   With this item you can turn
                                   the clock on and off. When
                                   the clock is off the clock
                                   display is hidden from view

               2.   Output To Printer This sets a flag which tells
                                   Astronomy Assistant to
                                   route the results of the
                                   calculations to the printer.

               3.   Output To File This sets a flag which tells
                                   Astronomy Assistant to
                                   route  the results of a
                                   calculation to a hold file
                                   on disk.

               4.   RPN Calculator This provides the Astronomy
                                   Assistant the functionally of
                                   a scientific RPN calculator.
               The following scientific functions are supported :

                     1.  Add            +
                     2.  Subtract       -
                     3.  Multiply       *
                     4.  Divide         /
                     5.  Absolute Value ABS
                     6.  Sign           SGN
                     7.  Integer        INT
                     8.  Modulo         MOD
                     9.  Fractional Part   FRAC
                    10.  One over X     1/X
                    11.  Square Root    SQR
                    12.  X Squared      X2
                    13.  Sine           SIN
                    14.  Cosine         COS
                    15.  Tangent        TAN
                    16.  Arcsine        ASN










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               09/06/92



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                    17.  Arc-cosine     ACS
                    18.  ArcTangent     ATN
                    19.  Hyper Sine     HSN
                    20.  Hyper Co-sine  HCS
                    21.  Hyper Tangent  HTN
                    22.  Arc Hyper Sine AHS
                    23.  Arc Hyper Tangent AHT
                    24.  Log            Log
                    25.  Log base 10    Log10
                    26.  Natural Log    Logn
                    27.  Exponential    Exp
                    28.  Ceil           Ceil
                    29.  Y raised to X  Y^X
                    30.  Pie            PI
                    31.  Swap           Swap
                    32.  Duplicate      Dup
                    33.  Convert decimal   CVDEC  (hh.mmss)
                    34.  HRS Mins Sec   HMS      (hh.ddddd)


               Since this is reverse polish notation entries are not the
               same as on a standard calculator. For example, 2 + 2 /4
               would be entered " 2 2 + 4 /"






























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               09/06/92



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               __________
               Parameters
               __________
               Parameters
               __________
               Parameters



               The "Parameters" menu item allows for the changing of the
               default items. The default items include:

                    1.   Latitude
                    2.   Longitude
                    3.   Right Ascension
                    4.   Declination
                    5.   Time Zone (west is negative value)
                    6.   Date
                    7.   Time
                    8.   Video Type  (Mono or Color)
                    9.   Save Parameters


               Anything west of Greenwich has a negative value.  Atlanta
               Georgia would have a value of -5 or -6 depending on
               daylight savings time.

               The new parameters take effect immediately except for the
               video type.  When the video type is changed Astronomy
               Assistant must be restarted.

               The values are stored in a text file and must reside in
               the same directory as Astronomy Assistant.

               These values can also be set by using "Astsetup"  from
               the DOS prompt.





















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               Copy Right 1992 By Allen Breedlove
               09/06/92



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               ________________
               Trouble Shooting
               ________________
               Trouble Shooting
               ________________
               Trouble Shooting



               Astronomy Assistant will not run on an 8088 CPU based
               machine.  If you would like such a version one can be
               made available on an individual basis.  A 286 or better
               is required.

               Astronomy Assistant has startup switches that can force
               it to run in a particular mode or do certain things.  The
               following switches apply.

               1.   /SCR0(2,3,4,8,9,10,11,12).  This switch forces
                    Astronomy Assistant to startup in certain Video
                    mode. Zero is the default mode. A Hercules card
                    is automatically detected and switched to "Mono".
                    Notice there is no space between the "SCR" and
                    "0".

               2.   /MONO This switch forces Astronomy Assistant to
                    startup in monochrome mode.

               3.   /COLOR This starts up Astronomy Assistant in color
                    mode. This is the default setting.

               4.   /ResetIndex. This rebuilds the default index name
                    file. It also clears any previous names out and
                    reenters the default names for the star and object
                    indexes.

               5.   /Createdefaultindex.  This rebuilds the default
                    indexes for the star and object data files. It is
                    usually used in conjunction with the fourth item.

               6.   /Nosetindex.  This is used if you want to start
                    Astronomy Assistant without using the default
                    indexes.  The data files are opened but there
                    is no index associated with them.  This is useful
                    if you are running Astronomy Assistant from a
                    floppy drive and you just want to use the
                    calculation functions.












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               Copy Right 1992 By Allen Breedlove
               09/06/92



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               ________________
               Trouble Shooting
               ________________
               Trouble Shooting
               ________________
               Trouble Shooting



               I have included two utilities for database maintenance
               and repair.  These were developed by Microsoft for use
               with their ISAM files.

               One utility tries to repair a corrupt file.  It saves as
               many records as possible and rebuilds the file. It's
               called "ISAMREPR.EXE" .

               The other is a file compression utility.  It takes the
               dead space out of the file. When you create indexes space
               is allocated in the file.  When the index is deleted, the
               space still remains there.  Use this utility to remove
               the unused space.  The name of this utility is called
               "ISAMPACK.EXE".

               These programs must be used from the dos command prompt.
               Do not try to execute them from within Astronomy
               Assistant.































               ____________________________________________________
               Copy Right 1992 By Allen Breedlove
               09/06/92



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               __________
               Appendices
               __________
               Appendices
               __________
               Appendices__
                          I
                         __
                          I
                         __
                          I


               This is a sample report using the star data base.  It is
               sorted by constellation by right ascension.  This report
               was produced by using the report generator.  It has one
               limiting field (constellation) with one limiting
               parameter. The file was selected by limiting the
               constellation field to the value "Orion". A page header,
               date and page number was added.


               REPORT LISTING FOR ANYONE SORTED BY CONSTELLATION BY RA
               08-02-1992                                       PAGE 1
               STAR NAME       CONSTELL RIGHT ASCEN DECLINATION   VIS.MAG
               -------------------------------------------------------------
               --


               STF589  ORION            04:44.8   +05:17       +9.0
                         A2037          ORION     04:47.1      +10:02      +7.3
                        STF597          ORION     04:47.6      +13:06      +8.6
                         HJ684          ORION     04:48.4      +10:55      +9.0
                         HJ684          ORION     04:48.4      +10:55      +8.8
                         STT55          ORION     04:49.2      +05:12      +8.2
                         PIORI          ORION     04:49.8      +06:57      +3.3
                           H83          ORION     04:50.3      +06:57      +7.2
                         A2622          ORION     04:50.5      +01:03      +9.0
                        BAL665          ORION     04:51.0      +00:02      +9.0
                        STF609          ORION     04:51.8      +01:15      +8.9
                         BU552          ORION     04:51.8      +13:39      +6.7
                         A1943          ORION     04:52.3      +05:41      +8.3
                          S457          ORION     04:53.1      -01:16      +8.4
                         A2040          ORION     04:53.2      +08:33      +7.8
                        STF612          ORION     04:54.2      +07:22      +8.5
                         STT90          ORION     04:54.9      +08:35      +7.0
                         STT90          ORION     04:54.9      +08:35      +6.8
                         PIORI          ORION     04:54.9      +10:08      +4.7
                         PIORI          ORION     04:54.9      +10:08      +4.7
                        STF614          ORION     04:55.1      +00:32      +8.4
                        BAL293          ORION     04:55.3      +00:56      +8.8
                       BAL2130          ORION     04:55.9      +03:46      +8.7
                         STT91          ORION     04:56.2      +03:10      +8.5
                         BU553          ORION     04:56.4      +13:31      +4.3
                         BU553          ORION     04:56.4      +13:31      +4.3
                        STF622          ORION     04:58.1      +01:39      +9.0
                         HJ689          ORION     04:58.2      -02:12      +6.4
                        STF620          ORION     04:58.3      +13:57      +8.6
                         SHJ49          ORION     04:59.0      +14:32      +6.0
                         SHJ49          ORION     04:59.0      +14:32      +6.0
                         SHJ49          ORION     04:59.0      +14:32      +8.1
                        STF626          ORION     05:00.0      +10:23      +8.2
               ____________________________________________________
               Copy Right 1992 By Allen Breedlove
               09/06/92



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               Astronomy Assistant                               
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               Astronomy Assistant                               
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               Astronomy Assistant                                
                                                                  
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                        STF628          ORION     05:00.6      +03:15      +8.2
                        STF627          ORION     05:00.6      +03:36      +6.6
                          S463          ORION     05:01.8      +11:22      +7.0
                         A2630          ORION     05:02.0      +01:36      +6.3
                        STF630          ORION     05:02.0      +01:36      +6.5
                          J307          ORION     05:03.6      -02:31      +6.8
                         HJ691          ORION     05:05.3      +09:14      +8.9
                         13ORI          ORION     05:07.7      +09:28      +6.3
                         STT98          ORION     05:07.8      +08:29      +5.9
                         BAL34          ORION     05:08.4      -02:33      +9.0
                         16ORI          ORION     05:09.3      +09:49      +5.4
                         16ORI          ORION     05:09.3      +09:49      +5.4
                          J323          ORION     05:09.9      +10:53      +8.1
                          J323          ORION     05:09.9      +10:53      +8.0
                        STT100          ORION     05:10.0      +08:10      +7.2
                          S468          ORION     05:10.3      +14:00      +8.7
                         BU885          ORION     05:11.0      -01:45      +8.5





































               ____________________________________________________
               Copy Right 1992 By Allen Breedlove
               09/06/92



               __________________________________________________
               Astronomy Assistant                               
               __________________________________________________
               Astronomy Assistant                               
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               Astronomy Assistant                                
                                                                  
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               __________________
               Alphabetical Index
               __________________
               Alphabetical Index
               __________________
               Alphabetical Index


               "*" as a delimiter, 21
               /COLOR, 34
               /Createdefaultindex., 34
               /MONO, 34
               /Nosetindex., 34
               /ResetIndex, 34
               /SCR, 34
               Absolute Value, 31
               Accept Header, 23
               Add, 31
               Add Date, 23
               Add Header, 23
               Add Item Parameters, 21
               ADS, 14
               Alternate Name, 14, 15
               And, 23
               Anomaly, 27
               Aphelion Distance, 29
               Appendices, 36
               Approximate Magnitude, 30
               Arc Hyper Sine, 32
               Arc Hyper Tangent, 32
               Arc-cosine, 32
               Arcsine, 31
               ArcTangent, 32
               Argument Of Perihelion, 29
               ascii text file, 14
               Astsetup, 7























               ____________________________________________________
               Copy Right 1992 By Allen Breedlove
               09/06/92



               __________________________________________________
               Astronomy Assistant                               
               __________________________________________________
               Astronomy Assistant                               
               __________________________________________________
               Astronomy Assistant                                
                                                                  
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                                                                  38
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                                                                  38



               Break 2nd, 22
               Break First, 22
               BV Magnitude, 14

               calculator, 4
               Calendat Date Conversion, 25
               Cancel Heading, 23
               Ceil, 32
               Color, 8
               Column Header, 17
               Companion, 14, 15
               Companion Magnitude, 14
               Constellation, 14
               constellation, 10, 20, 23
               Constellation Name, 15
               Convert decimal, 32
               Convert UP, 22
               Corrections For Latitude, 29
               Corrections For Longitude, 29
               Cosine, 31
               Count First, 22
               Create File Index, 9, 10
               create index, 7
               Create List, 22
               Creating A Report, 20




























               ____________________________________________________
               Copy Right 1992 By Allen Breedlove
               09/06/92



               __________________________________________________
               Astronomy Assistant                               
               __________________________________________________
               Astronomy Assistant                               
               __________________________________________________
               Astronomy Assistant                                
                                                                  
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                                                                  39
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                                                                  39
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                                                                  39



               data dictionaries, 4
               database, 4
               database maintenance, 35
               Date, 7, 33
               Day Number Of Year, 25
               Declination, 7, 14, 15, 33
               Defict Of ILLumination, 30
               delete, 16
               Delete Index, 9
               Description, 15
               Diameter, 15
               Display Items, 21
               Display Length, 17
               Display Time, 31
               Distance From Sun, 30
               Distance To Planet, 30
               Divide, 31
               Duplicate, 32

               Eccentric Anomaly, 29
               Eccentricity, 29
               Eclipse Of Moon, 28
               Eclipse Of Sun, 28
               Ecliptic To Equatorial, 27
               EMS, 6
               EQ, 21
               Equatorial Coordinates, 30
               Equatorial To Ecliptic, 27
               Equatorial To Galactic, 27
               Equatorial To Horizion, 27
               Exit Inquiry, 14
               Exp, 32
               Exponential, 32




















               ____________________________________________________
               Copy Right 1992 By Allen Breedlove
               09/06/92



               __________________________________________________
               Astronomy Assistant                               
               __________________________________________________
               Astronomy Assistant                               
               __________________________________________________
               Astronomy Assistant                                
                                                                  
                                                                  __
                                                                  40
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                                                                  40
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                                                                  40



               file compression, 35
               files, 6
               Fractional Part, 31

               Galactic To Equatorial, 27
               GE, 21
               Geocentric Coordinates, 30
               GT, 21

               Heliocentric Coordinates, 30
               Horizion To Equatorial, 27
               Hour Angle To Right Ascension, 26
               HRS Mins Sec, 32
               Hyper Co-sine, 32
               Hyper Sine, 32
               Hyper Tangent, 32

               Illumination Angle, 30
               index, 10
               index name, 12
               indexes, 7
               Integer, 31
               interface, 4
               ISAMPACK.EXE, 35
               ISAMREPR.EXE, 35

               Julian Date Conversion, 25
               Justification, 17

























               ____________________________________________________
               Copy Right 1992 By Allen Breedlove
               09/06/92



               __________________________________________________
               Astronomy Assistant                               
               __________________________________________________
               Astronomy Assistant                               
               __________________________________________________
               Astronomy Assistant                                
                                                                  
                                                                  __
                                                                  41
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                                                                  41
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                                                                  41



               Latitude, 7, 33
               Latitude Of The Earth, 30
               LE, 21
               Length Of Semi-Major Axis, 29
               Local Sidereal Time, 25
               Local Time Conversion, 25
               Log, 32
               Log base 10, 32
               Longitude, 7, 33
               Longitude Of Ascending Node, 29
               Longitude Of Perihelion, 29
               LT, 21
               Lumonsity, 14
               lunar, 4

               magnitude, 10, 20
               Magnitude Range, 15
               math CO-processor, 6
               Mean Anomaly, 29
               Mean Daily Motion, 29
               Mean Longitude, 29
               Modulo, 31
               Mono, 8
               Moon Phases, 28
               Moon Position, 28
               Multiple Parameters, 23
               Multiply, 31
               MV Magnitude, 14

               Natural Log, 32
               Notes, 15
               Null Meridian, 30
               Nutation Correction, 27




















               ____________________________________________________
               Copy Right 1992 By Allen Breedlove
               09/06/92



               __________________________________________________
               Astronomy Assistant                               
               __________________________________________________
               Astronomy Assistant                               
               __________________________________________________
               Astronomy Assistant                                
                                                                  
                                                                  __
                                                                  42
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                                                                  42
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                                                                  42



               Object Name, 15
               object record, 15
               Object.mdb, 9
               Objectidx1, 7
               Obliquity Correction, 27
               One over X, 31
               Or, 23
               Orientation OF Axis in Declination, 30
               Orientation Of Axis in Right Ascension, 30
               Output Control, 21
               Output To File, 31
               Output To Printer, 31

               Page #, 23
               parameter restrictions, 21
               Parameters, 7, 33
               Perihelion / Aphelion, 30
               Perihelion Distance, 29
               Period, 15
               Phase Angle, 30
               Pie, 32
               Planet Diameter, 30
               planetary, 4
               Position Angle, 14, 15, 30
               Precession Correction, 27
               printer, 22
               pull down menu, 4


























               ____________________________________________________
               Copy Right 1992 By Allen Breedlove
               09/06/92



               __________________________________________________
               Astronomy Assistant                               
               __________________________________________________
               Astronomy Assistant                               
               __________________________________________________
               Astronomy Assistant                                
                                                                  
                                                                  __
                                                                  43
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                                                                  43
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                                                                  43



               Radius Vector, 29
               Record Retrieval, 13, 14
               Reference File, 14, 15
               relational, 21
               report, 4
               Report Generation, 13
               report generation, 10
               Report Generator, 19, 20
               Retrieve Object Record, 13
               Retrieve Star Record, 13
               Right Ascension, 7, 14, 15, 33
               Right Ascension To Hour Angle, 37
               Rise Time, 30
               RPN Calculator, 31

               Save, 15
               Save Parameters, 33
               screen output, 18
               Separation, 14, 15
               Set Current Index, 12
               Set File, 9, 10
               Set Index, 9, 11, 12, 20
               Setting Time, 30
               setup, 7
               SIgn, 31
               Sine, 31
               Sky Atlas Location, 15
               solar, 4
               Solar Elongation, 30
               Spectral Type, 14
               Square Root, 31
               Star Name, 14
               Star.mdb, 9
               Staridx1, 7
               Subtract, 31
               Sun Position, 28
               Swap, 32
               switches, 34

               Tangent, 31
               Time, 7, 33
               Time Functions, 25
               Time Zone, 33
               Transit Time, 30
               True Anomaly, 29
               Type, 15

               Universal Sidereal Time, 25
               Update Dictionary, 13, 17, 18
               Uranometria Location, 15

               video flag, 7
               Video Type, 7, 33
               ____________________________________________________
               Copy Right 1992 By Allen Breedlove
               09/06/92



               __________________________________________________
               Astronomy Assistant                               
               __________________________________________________
               Astronomy Assistant                               
               __________________________________________________
               Astronomy Assistant                                
                                                                  
                                                                  __
                                                                  44
                                                                  __
                                                                  44
                                                                  __
                                                                  44


               Visible Disk, 30
               Visual Magnitude, 14, 15

               Weekday Name, 25

               X Squared, 31

               Y raised to X, 32
               Year Cataloged, 15













































               ____________________________________________________
               Copy Right 1992 By Allen Breedlove
               09/06/92
