Welcome  to  probably  the  best  all  round  astronomy 
      program for the S.T.

      The  Astrolab program on this disc is version  0.7  and 
      contains many improvements over the 0.6 version.    Not 
      least  of these is the fact that is now runs on any  ST 
      including  the 520 and that all the drag of  converting 
      the star data files (a 20 minute task and requiring ram 
      disks and one meg memories) is avoided.     The program 
      is now ready to load and run.
      To  start  just click on ASTROLAB.PRG.    At  the  bell 
      press  return and you'll reach  the  desktop.    Select 
      "File"  and click on DATEN (Ersetzen).    At  the  file 
      selector  box choose one of the three data  files  (the 
      figures refer to the limiting magnitude).   When it has 
      loaded click on the right button and you are  presented 
      with the standard star field.   To add more stars click 
      on  the right button to return to the  desktop,  select 
      file again,  then DATEN (and this time Anfugen -  which 
      means merge).    You can load all three data files like 
      this which gives you a spectacular stellar view.    You 
      can  always  control the number of stars on  screen  by 
      altering the magnitude limit with the "+" and "-"  keys 
      on the numeric keypad.    You'll find that the  numbers 
      also change the field of view.
      Clicking  on the figures in the status line at the  top 
      of   the   screen  allows  you  to   change   all   the 
      settings. From  the left these are type of  projection, 
      Bildw  =  Angle  of view in degrees (255  to  6);  L  = 
      longitude (” means east,  w is west);  Br = latitude (n 
      or s); Azimut = direction of view around horizon in 360 
      degrees  (north is 0);  H”he = angle of  vertical  view 
      (+90  means you are looking straight up,-90  gives  the 
      view view under yuour feet);  zeit = time and of course 
      the date.
      There is much more,  so attached is a brief translation 
      of the other terms used.

      Ekliptic     =    Ecliptic (yes, really)
      Himmelsqu„   =    Celestial equator
      Horizont     =    Horizon
      Raster       =    grid lines (as in RA and dec)+ means                   
                        fine, - is coarse.
      Stauszeille  =    Status line
      Sternbilder  =    Constellation outlines.
      Tierkris     =    Signs of the zodiac.
      Sternnamen   =    Star names.
      Mauslock     =    sets higher rate for data change  in 
                        status line.
      H™heblock    =    sets horizon low on screen.
      Mischen      =    holds star images so that trails  are 
                        produced under time movement.
      Reverse      =    Black or white background.
      Pr„zession   =    adds computation for precession  when 
                        plotting star positions,.
      Voreinstellšng=    Window to enter details,  time  date 
                        position, etc. 

      Finally;  many  of  the ST's  facilities  work  (rubber 
      banding  with  the  mouse  to  select  a  screen  view, 
      clicking  with both mouse buttons - generally the  left 
      advances data,  the right button reverses it)   Several 
      keys are "live" particularly the functions keys.
      Remember if you are watching the skies wheel about they 
      move faster with the number of stars cut down, so press 
      the "-" numeric key while getting to where you want  to 
      go and then put them all back with the "+".
      881025