Re: >Date: Sat, 1 Mar 2003 18:28:40 +0100 >From: R.Kracht@t-online.de (Rainer >Kracht) >Subject: Re: Milstar 5 video obs Hi Rainer, Thanks for your reply - Im replying via SeeSat as I am hoping that the information etc will be of interest to others and encourage them also to go for video satellite work. In your reply to Brooke Clarke's query : >> What is a 1004a? >Willie's camera (1004x), perhaps the 1004x JG CCD ASTRO CAMERA? No, Willie and I have not yet converted our CCD cameras to the Jon Grove (JG) modification which allows time exposures - so we operate only in the video mode which means exposures around 1/50th sec. I did get a second 1004x with the JG modification in mind but have so far done nothing about it. As a matter op operational technique-- when you use the integrated mode what time do you report - middle of the exposure? Yesterday I played with some video recordings I had of satellite passes and integrated the video frames in software - this does increase sensitivity but of course my time display in the frames is blurred because of the overlapping of successive images. Do you make use of a dark frame or flat field to remove image defects etc? When I next track - probably tomorrow night - Ill try Milstar 5 and see what kind of results I can get. Ive tended to ignore geostationary satellites except when they have made themselves obvious by flashing etc. Cheers Greg ----------------------------------------------------------------- To unsubscribe from SeeSat-L, send a message with 'unsubscribe' in the SUBJECT to SeeSat-L-request@satobs.org List archived at http://www.satobs.org/seesat/seesatindex.html
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