Re: Visibility window graph

JAY RESPLER (jrespler@InJersey.com)
Thu, 18 Sep 1997 00:08:42 -0400 (EDT)

> I often thought it would be nice to be able to produce a graph of the
> visibility windows for satellites for a geographical location, but have not
> seen any software package that produce such an output. 
> Is anyone aware of software that produce something like this?

> Willie


InstanTrack has something like that.  This is from the Doc file:


The Satellite Schedule Display...
---------------------------------

This display is an attempt to provide you with a quick indication of when
satellite operations may be possible.  The schedule shows you when a
satellite will be above the horizon as viewed from your station.  If you
have entered a satellite schedule for this satellite (in the satellite
database), then the satellite operating mode will also be shown whenever
the satellite is up. 

There are two forms of the display.  You can display a single satellite for
20 days, or 20 satellites on a single day.

  Understanding The Display
  -------------------------
In the first form, each day is shown as a row on the display.  Each column
indicates a 20 minute period during the day.  A portion of the display looks
like this...

  Satellite: Oscar-13        Station: N6NKF

                          Hours UTC
          0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 ... 23
  05/21/89------------oooBBBBBBJJJBBBBB-------------- ... --
  05/22/89------------------BJJJ----------B---------- ... --
  05/23/89----------------BJ----------BBBB----------- ... --


'--' is when sat is below horizon. 



Jay Respler
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--
              JRespler@InJersey.com  
    Satellite Tracker * Early Typewriter Collector
               Freehold, New Jersey