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Re: AO-7 eclipse plotting



WinOrbit shows the satellites footprint. The satellite is in eclipse when
the entire foot print is in the dark. ie if there is a straight line between
the ground, the sun on one horizon and the satellite on the opposite horizon
the the satellite must be about to either go into or come out of an eclipse.

regards
Murray Peterson
VK2KGM

----- Original Message -----
From: "SM0AIG" <amsatbullar@hotmail.com>
To: "amsat-bb" <amsat-bb@AMSAT.Org>
Sent: Tuesday, June 25, 2002 8:44 PM
Subject: [amsat-bb] AO-7 eclipse plotting


| Does anyone know of a good method to establish when AO-7 is in the sun or
| not? It would be interesting to pick up the TLE when it goes from dark to
| light. I have available Nova, WinOrb and InstantTrack and wonder if there
is
| a way of fooling those into showing the eclipses.
|
| I have been using the gray line as a coarse measure, but how far from
| reality is that considering that AO-7 is up on a 1460 km high hill. Can
one
| approximate from the gray line or is there a better way?
|
| I have seen SAT-PC32 being mentioned but with already three tracking
| programs on hand, I would first like to see one of them do the job.
|
| Ingo / SM0AIG
|
|
| ----
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|

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