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Re: AO-7



Not here.  I was able to understand it.  :-)

Mike
KE4AZN

= = = Original message = = =

Was my explanation in error?

Drew

----- Original Message -----
From: "Robert McGwier" <rwmcgwier@comcast.net>
To: "Amsat Bulletin Board" <amsat-bb@AMSAT.Org>
Sent: Friday, September 13, 2002 8:07 AM
Subject: RE: [amsat-bb] AO-7


>
> Let me be really emphatic about this as it is constantly misinterpreted.
>
> If does not matter if the subsatellite point is in light or 
dark.
> If ANY portion of the footprint of the satellite crosses the 
terminator,
> the satellite is NOT IN ECLIPSE.  The geometry of this is clear. 
 The
> satellite could not "see" that portion of the earth if the 
sun was
> below the horizon.
>
> Bob
>
> -----Original Message-----
> From: owner-AMSAT-BB@AMSAT.Org [mailto:owner-AMSAT-BB@AMSAT.Org]On
> Behalf Of Drew Glasbrenner
> Sent: Thursday, September 12, 2002 10:13 PM
> To: Dave Oman; amsat-bb@amsat.org
> Subject: Re: [amsat-bb] AO-7
>
>
> I'm not sure what tracking program you use, but I plugged that 
time into
IT
> and AO-7 was not in eclipse. If you look at a map of the earth 
with the
sats
> footprint on it, if the footprint crosses the terminator (light 
dark
> boundary) the satellite is in sunlight. The entire footprint 
has to be in
> the dark area for the satellite to be in eclipse.
>
> Drew
>
> ----- Original Message -----
> From: "Dave Oman" <doman@ils.net>
> To: "amsat-bb@amsat.org" <amsat-bb@AMSAT.Org>
> Sent: Thursday, September 12, 2002 9:41 PM
> Subject: [amsat-bb] AO-7
>
>
> > AO-7 passed over (89 degrees) my QTH this evening on orbit 
27333 and at
> 9:04 P.M. EDT the beacon was on.
> > I copied it for the rest of the pass , however, according 
to my tracking
> program the satellite was in eclipse??
> > Anyone else see this one?
> > Regards..
> > Dave Oman
> > VE3SAT
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>
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>
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