Author Topic: Long Exposure Webcams with AstroArt 3.0  (Read 722 times)

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Mike

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Long Exposure Webcams with AstroArt 3.0
« on: Aug 22, 2005, 20:44:48 »
I found out today that using AstroArt 3.0 you can do long exposure images with UNmodified webcams ! (not tested it on the scope but works fine in the 'lab')
We live in a society exquisitely dependent on science and technology, in which hardly anyone knows anything about science and technology. Carl Sagan

Rocket Pooch

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Long Exposure Webcams with AstroArt 3.0
« Reply #1 on: Aug 23, 2005, 08:05:27 »
How? or are they doing off-chip integrations?

Mike

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Long Exposure Webcams with AstroArt 3.0
« Reply #2 on: Aug 23, 2005, 09:08:49 »
I presume so. Would be interesting to try at the scope as an experiment I suppose. The problem is there is a lot of noise generated by webcams and after doing some experiments indoors with 10 and 30 second exposures a load of vertical lines appear, but these could be made into a bias frame and subtracted easily enough.
We live in a society exquisitely dependent on science and technology, in which hardly anyone knows anything about science and technology. Carl Sagan

Rocket Pooch

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Long Exposure Webcams with AstroArt 3.0
« Reply #3 on: Aug 23, 2005, 13:59:47 »
I would not worry about that because you would not use 20-30 seconds for guiding because you may at that point already have PEC problems, most guiding is done at about 1-5 second images.

Mike

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Long Exposure Webcams with AstroArt 3.0
« Reply #4 on: Aug 23, 2005, 14:06:14 »
I was just talking about using the webcam for long exposure imaging, not guiding - for anyone that doesn't have a long exposure camera, but has a webcam.
We live in a society exquisitely dependent on science and technology, in which hardly anyone knows anything about science and technology. Carl Sagan