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Old 08-07-2011, 10:26 PM
ijontichy
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ijontichy is offline
 
Join Date: Jul 2009
Location: Sydney, Australia
Posts: 6
I noticed that the DMK camera does 60 fps. Does that mean that each frame is exposed for 1/60 of a second? If so, then the Sun would move 15" during that time (if I did my calculations properly) and I would end up with a blurred image for each frame. So then non-tracking would not only be frustrating like you said but also produce a crappy image.

Isn't tracking laborious to set up if I am going the portable route, putting the telescope/mount in my car, driving to some place, and then setting up? Can the tracking just be rough? I assume I can do rough polar alignment by setting my latitude, and then using a compass to point in the right direction (correct me if I'm wrong).

600 frames would take say 10 seconds. If I can keep the telescope tracking error down to 1' per second, then a 1/60 second exposure would have the Sun move 1" during that short period, unnoticeable. And during 10 seconds the entire Sun could stay in my frame if my field of view is greater than 42' or so.

So then the question is could the very rough polar alignment method I outlined above achieve a tracking error of no more than 1' per second?
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