Hi K4FEG If you like to know for sure when a satellite is into eclipse or not use please InstantTrack.
Option 5 Multiple Satellite Co-visibility will answere to your question. 73" de i8CVS Domenico ----- Original Message ----- From: "Wayne Estes" <w...@charter.net> To: <amsat-bb@amsat.org> Sent: Monday, June 17, 2013 9:54 PM Subject: [amsat-bb] Re: AO7 in Mode B > K4FEG wrote: > > There have been questions as to whether or not a program like SATPC32 is > calculating the solar position based on ground track or actual satellite > position in orbit, I have not reached out to find out the method of > calculations but based on how AO7 has reacted to even the briefest of > eclipse's as predicted by SATPC32, I suspect the relationship of the > satellite to the Sun is being predicted based on the actual satellite > position in orbit and not based on ground track. > > W9AE replies: > > SatPC32 displays "Sat in Sun" when the satellite's footprint overlaps > the sun's footprint. You can see it change to "Eclipse" when the two > footprints no longer overlap. > > In practice, AO-7's solar panel probably quits generating enough power > when only a portion of the sun's "disc" is obstructed by earth. > Consequently, the satellite would quit working a bit sooner than the > actual eclipse, when 100% of the sun is shaded by earth. > > This year I plan to make Field Day satellite contacts for the first time > in several years. In western Oregon I can operate the un-crowded > satellite passes where most of the footprint is over the Gulf of Alaska. > > Wayne Estes W9AE > Oakland, Oregon, USA, CN83ik > _______________________________________________ > Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb _______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
