I think it depends on the level of details you are after and the seeing conditions at the time you image. I've read as low as 1min for jupiter for very fine details at very high magnification. In practice I use 3min top for Jupiter, 5min on Saturn and 5min on Mars. AS!3 will derotate that alright. I haven't used winjupos yet. You can shoot one continuous video if you want then process parts of it or shoot multiple separate videos. I do separate. My thinking is that if the camera crashes or disconnect you don't lose the lot.
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