Quote:
Originally Posted by glend
Thanks Greg, i have done broadband flats before using the old white t-shirt technique after sunset or early next morning using 2" exposures - but that for my dslr images. I was not sure if narrowband flats were a different beast.
Since i am using SGP i had better read the manual section on calibration/flats.
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SGP has a flat calibration wizard that does the job for you. Just run that, selecting which filters/binning you want, and it'll automatically work out what exposure times needed, then save those settings so when you do a sequence with flats, it fills in the exposure for you.