ALLEN THOMSON wrote: > > --- Marco Langbroek <marco.langbroek@wanadoo.nl> wrote: > >> Lacrosse 5 is still doing its odd rapid "disappearance trick"... > > As has probably been mentioned, the only explanations that seem to make > sense are that it has a large specular or very black surface that hides > the main body at certain angles. The specular surface would hide the > main body when it's oriented to show the observer a view of black > space. What that surface might be is a planar radar antenna or maybe (I > don't think so, but maybe) a solar panel. It has to be something like that, yes. Back in March I have reported a number of timings for the "disappearance trick" too so perhaps it is possible to correlate these to a certain spacecraft attitude. Lacrosse 5 clearly is an odd bird compared to the earlier Lacrosses: * it is brighter (visually and photographically); * instead of red-orange it is yellow in colour; * the other Lacrosse-birds don't do the "disappearance-trick" (instead, they show short flares) Goes to show that if you have seen one Lacrosse, you ain't seen them all... > An "anti-flare", so to speak. Ha! That is what I call it myself too (only the effekt lasts longer than the typical flare). - Marco ----- Dr Marco Langbroek - SatTrackCam Leiden, Cospar 4353 Leiden, the Netherlands. 52.15412 N, 4.49081 E (WGS84), +0 m ASL SatTrackCam: http://home.wanadoo.nl/marco.langbroek/satcam.html Station (b)log: http://sattrackcam.blogspot.com Atom RSS: http://sattrackcam.blogspot.com/atom.xml e-mail: sattrackcam@wanadoo.nl ----- ------------------------------------------------------------------------- Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: http://www.satobs.org/seesat/seesatindex.html
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