Christian, If it wasn't solved yet, your thanks were premature ? On my first check, I probably didn't use an elset file near the date given. When I found time to check the stereo effect, and do the triangulation, I eventually found the solution - but it could easily be done without all these computations and image transformations ! The satellite is Cosmos 1220 6.0 0.0 0.0 4.9 v 20 631 x 505 km 1 12054U 80089A 02096.43010465 .00012357 00000-0 92703-3 0 3319 2 12054 64.9844 88.6764 0090561 151.7847 208.8222 14.99688456 69742 recent elset: 1 12054U 80089A 02228.52406784 .00011170 00000-0 79756-3 0 7194 2 12054 64.9800 34.7907 0076663 90.6632 270.3349 15.02500593 89572 At the track center: 565 km height, 1574 km range, predicted pass of pi (20) Cas 20:15:12 UTC, going right (NorthEast), track length 13s on Comet2.jpg. I first computed two points at equal distance and parallell directions from the two observing locations, put these points in SkyMap .pnt (and/or .trj!) files to have the baseline size and direction displayed in SkyMap. Then I rotated and rescaled the two images and the SkyMap plot to same size, with a horizontal baseline and parallax. Unfortunately, the true stereo effect is too large to be admired. I then measured the parallax, and compared it to the one predicted from a known height/range. If you are interested in the original or processed images, or my computations, I will mail the files (or put them on my/some homepage). -- bjorn.gimle@tietotech.se (office) -- -- b_gimle@algonet.se (home) http://www.algonet.se/~b_gimle -- -- COSPAR 5919, MALMA, 59.2576 N, 18.6172 E, 23 m -- -- COSPAR 5918, HAMMARBY, 59.2985 N, 18.1045 E, 44 m -- ----- Original Message ----- ... > Got various interesting reactions from , but the true problem wasn't solved yet. > ... > Mons en Montois does not have Lat 48 deg 48' N, Long 3 deg 14' E, as indicated to me, but 48.48 deg N, 3.14 deg E... > > Now the triangulation is quite good, but the exact time is unknown. An > appearance during the first half of the exposure gives the better > triangulation results. > > This must come from a quite bright object, as it is more than 1000 km away: > > 8 April 2002, between 20h13m and 20h40m UT > 5 deg W, 57 deg N (+- a few degrees in Long and Lat) > height between 250 and 350 km > duration of the 'flare' between 7 and 10 seconds > > > Thanks for identifying it! ... ----------------------------------------------------------------- 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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