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December 2, 2000

More shots with the Barlow extender and the visual back. I'm starting to question whether the whole "freezing the seeing" concept is really an issue with the tiny scope and cheap camera that I'm using. The idea was (and is with large telescopes) that the shorter the exposure, the sharper the resulting image, since image movement due to seeing and tracking would be lessened.

I've started to think, however, that with the cheap QuickCam that I'm using it's more important to make good use of the camera's dynamic range, so tonight I used longer exposure settings:

This is as good an image of Jupiter as I've ever gotten. Note the Red Spot to the far right.

This is an awfully good image of Saturn, but I get the impression that I've done better. Maybe 1/3 second is just too long.

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