The video animation here; http://i39.tinypic.com/2j68d2f.gif was taken some years back. As I recall it was an increasingly cloudy evening and I used 12 second frames every half minute. In the final frames its just possible to see the shadow encroach on the most easterly satellites of the group , before engulfing the rest. There were seven satellites at 19.2 east at this time.( March 8 2004 ) John --- On Wed, 25/2/09, Bjoern Gimle@GlocalNet <bg_26934@glocalnet.net> wrote: > From: Bjoern Gimle@GlocalNet <bg_26934@glocalnet.net> > Subject: Re: Geo sat's to internal power = time for them to go into shadow > To: SeeSat-L@satobs.org > Date: Wednesday, 25 February, 2009, 9:13 AM > I managed to reverse my thinking, but nobody complained yet! > > The geoflare period starts before vernal equinox for > NORTHERN observers. > (I have the geos at -8 declination, the Sun is there on the > evening of Feb.27. My best autumn observations were > Oct.15-17) > > -- Björn Gimle > -- > -- COSPAR 5917, STAR, +18.05447 (E), +59.34185 (N), 33 m > -- > -- COSPAR 5918 WGS84, +18.10127 (E), +59.29813 (N), 44 m > -- > -- COSPAR 5919, MALMA, +18.6206 (E), +59.2615 (N), 33 m > -- > > > ----- Original Message ----- From: "Bjoern > > > > For a given latitude, it centers around the time the > Sun is near the > > declination of the operative geos, ie the Clarke belt. > > So the period soon starts for the observers far south. > Duration ~2 weeks. > > > ------------------------------------------------------------------------- > Subscribe/Unsubscribe info, Frequently Asked Questions, > SeeSat-L archive: > http://www.satobs.org/seesat/seesatindex.html ------------------------------------------------------------------------- Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: http://www.satobs.org/seesat/seesatindex.html
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