Imaging of astronomical objects or large regions of the sky.

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What equipment is needed for equatorial drift scanning/TDI with a Dobsonian?

It should be possible to do a "parked scan" along the celestial equator ("stripe 82" and "stripe 10") with a Dobsonian telescope, as no tracking is required. I can foresee two issues, though: first, ...
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Diameter of Stellar Object Using Magnification

I took a picture of Jupiter through my telescope, using an iPhone. I know the magnification of the telescope lens I used, and can Google to get the magnification of the iPhone lens (the magnification ...