Quote:
Originally Posted by Uchtungbaby
No, it's not a mirror spectre. I hosed off the mirror with the garden hose before I began. 
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Dust spots on the mirror have no effect on an image other than a slight scattering of light, they do not show as dark spots on the photo.
Dust spots on the CCD or CMOS (or film) will show as a dark spot on the final photo.
What camera, telescope, etc equipment did you use for the photo?