RE: Sunangle and skymap

From: Matson, Robert (
Date: Mon Mar 04 2002 - 12:50:40 EST

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    Greetings Ulhas,
    > What should be the lighting constraint set for  geoflsh. If
    > I set 'no const' I get a large no of tracks but the moment
    > I set 'sunlit only' all tracks vanish.
    Leave the satellite lighting constraint at sunlit only, and change
    the magnitude limit to something like +13 or +14.  That should show
    you plenty of GEOs (provided your range and perigee limits are set
    high enough in the All File search menu).  The reason you need to
    set the magnitude limit so dim is that most GEOs never get brighter
    than 12th magnitude -- except when the specular component of their
    brightness swamps the diffuse return.  SkyMap does not compute these
    "flare" magnitudes (near the equinoxes) because they vary too much
    from satellite to satellite.
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