Quote:
Originally Posted by lookus
am i better off taking 20 x 10 minute frames( spending the time taken doing ICNR and taking more light frames) and then stacking these 20 frames in DSS.? my idea here is to build a library of dark frames for various exposures and temperatures. so i would initially have to invest some time in building the library but these dark frames could be reused for a while.
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This would be the optimum imaging workflow I think - maximize your number of light frames and dark subtract from a known library of temperature matched darks.
Unfortunately I could never be bothered with the building up of the library or critically recording the temps of each light throughout the imaging run so I stick to ICNR which subtracts a dark of the same temp but as you state doubles the time needed.
Much easier to build up a library of exact temp matched darks with a CCD I think too.