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rbsfoto,
There's no filter to remove when viewing the Sun in Ha... it's part of the optical system; not like DSO stuf.
I agree if it's only the dust bunnies, but what about the flat field? There's possibly some vignetting in the system, this will not be corrected??
I was under the impression that all flats should be taken with the camera/ optical system which will take the lights??
Someone suggested rotating the camera and doing a median average????
Last edited by Merlin66; 16-06-2008 at 02:55 PM.
Reason: added comment about fixed Ha filters
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