Deep Space Imaging with a Dobsonian?

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rogerinnh

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Except for relataively bright objects that require very short exposure time, a Dobsonian telescope is not suitable for astrophotography, and that is because (so I am told) because although the telescope can be made to track the desired object it doesn't stay oriented properly on the focal plane's imaging device. The image rotates so that, after even a short exposure, the image is blurred.<br />Would it be possible to construct a mechanism that would compensate for the image rotation by rotating the imaging device?
 
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jcdenton

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An easier solution would be an equatorial platform, which can only track for a certain length of time before it has to be reset. See here, or if you think you're up to building your own, here's a guide. <div class="Discussion_UserSignature"> </div>
 
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