Very useful technique! What conversion tool(s) do you use? /Björn Gimle ----- Original Message ----- From: "Vitaly Mechinsky" <lupus_sat@tut.by> To: <seesat-l@satobs.org> Sent: Tuesday, May 18, 2010 1:41 AM Subject: "Re: Video of Unid satellite ?" ... > Kevin, I can't find any satellite from space-track.org and Mike > McCants web-site too. But in your video there are 4 satellites (I > think) -- Unid and three geosynchronous satellite (see: > http://hep.at.tut.by/tmp/MAY17unid_.jpg). > > This image was obtained by next way: I converted initial > "MAY17unid.wmv" into AVI-file, then I ude Registax software for > summing each frame to take into account stars moving during all video > (i.e. each star in each frame was summed by itself in onother frames) > -- 1617 frames were summed. In this case any object, that has angular > velosity not equal of stars one, will be represented as track -- you > can see the long track of Unid, and 3 small tracks of some objects. > They may be an "hot" pixels of your kamera, but its low intensity is > not typical for "hot" pixels. Maybe this 3 tracks -- unknown > geosynchronous satellite. To check the camera on "hot" pixels in this > three points of CCD is very simple -- by increasing exposure time up > to 1-2 seconds with closed lens. If you will see bright "hot" pixels > in this point, that short tracks are not satellites. _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-l
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