Just my thoughts. How old were the TLE you used to predict the transit? A small orbital adjustment of ISS can result in great changes in time and position. Greetings Leo Barhorst -----Oorspronkelijk bericht----- From: Kevin Fetter via Seesat-l Sent: Wednesday, May 28, 2014 11:37 AM To: seesat-l_at_satobs.org Subject: Re: ISS Solar Transit Looking up the info on the pass, it happened around 5:50:43 utc. At the time, the sun was very high in the sky, so when the iss passed across the sun, it was travelling at a good speed across the solar disc. So when you when to take the exposure, the iss had moved a good distance away from the centre of the solar disk. You would need to capture at very short exposure times, and get a few images during the transit, to hope to catch the iss at the centre of the solar disc. They say the camera you have, can capture up to 6 frames per second, so set the camera to do that. Kevin -------------------------------------------- On Wed, 5/28/14, Debasis Sarkar via Seesat-l <seesat-l_at_satobs.org> wrote: Subject: ISS Solar Transit To: seesat-l_at_satobs.org Received: Wednesday, May 28, 2014, 2:34 AM Hi Friends, I am new in this list and thanks for allowing me to be here. I am sharing a picture of ISS transit that I have taken on 17th May 2014 from a location lat=26.101400 & lon=87.984298. https://www.flickr.com/photos/sky-watchers-association-of-north-bengal-india/14024037178/ The optics was Celestron SCT 8" with Nikon D7000 at Prime Focus. I have taken a Video too with Sky Watchers 120mm f/8 reflector fitted with a HD Video cam. Interestingly, despite being on centerline (Plus Minus 200 meters), I did not get ISS to run through the center of solar disc. Instead, I had it pass through a distance of at least 1/4 solar radii from the center of Sun. Width of visibility path was 6km. I was following Calsky fro the prediction. Could you please enlighten me on what might have gone wrong? Thanks and regards- Debasis Sarkar _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-l _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-l _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-lReceived on Wed May 28 2014 - 05:30:34 UTC
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