Quote:
Originally Posted by ozstockman
Hi Robert,
And I guess you are aware that flats should be taken with your camera being at exact position as it was when you took your light frames. If you remove your camera and attach it back again there is a big change that all dust on a camera sensor and a telescope lens/mirror that are expected to be removed after applying flats wont match with the same dust in your light frames.
Mike
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Hi Mike, no I wasn't aware. Now I'm really confused. How can you take flats at night or do you leave the scope and camera out till day or use a light box? I thought flats were to correct for vignetting not dust?
