70 m across? If this is the case, I would expect that this would be really difficult to end up seeing. How long does it take for a satellite to cover 70m in ground track? With respect to a stationary observer, wouldn't the laser be only visible for a fraction of a second? This launch was delayed again. On Wed, 11 Dec 2002, Kevin Fetter wrote: > > > From: "Björn Gimle" <b_gimle@algonet.se> > To: <SeeSat-L@satobs.org> > Subject: Re: ICESAT > Date: Wed, 11 Dec 2002 15:55:54 +0100 > > > > > The neat thing about this satellite is it has a 532 nm ( green light ) > laser > > on board. The laser pulses at 40 times a second. So while we observe > > sunlight reflecting off the satellite, we should keep an eye out for > that > > pulsing laser light. > > > or while in penumbra + umbra ?? > > I don't see why not. > > The only problem is the way the laser is directed, towards the ground track. > The spot of light from the laser on the ground at the ground track, is > approx 70 m across. > > So it wil be hard to see laser light coming directly from the laser it > appears, unless you go to the ground track. > > What do you think? > > Kevin > > > > > > _________________________________________________________________ > The new MSN 8: smart spam protection and 2 months FREE* > http://join.msn.com/?page=features/junkmail > > ----------------------------------------------------------------- > Unsubscribe from SeeSat-L by sending a message with 'unsubscribe' > in the SUBJECT to SeeSat-L-request@lists.satellite.eu.org > http://www.satellite.eu.org/seesat/seesatindex.html > ----------------------------------------------------------------- Unsubscribe from SeeSat-L by sending a message with 'unsubscribe' in the SUBJECT to SeeSat-L-request@lists.satellite.eu.org http://www.satellite.eu.org/seesat/seesatindex.html
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