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Originally Posted by sheeny
Please let us know how you go with Dark Frame subtraction. I am most interested. I have given up on trying deep sky stuff for the moment because I have a problem where the "black" sky ends up psychadelic colours after dark frame subtraction.  I haven't sorted it out yet... I've just stepped back for a while to get some planetary imaging under my belt so it doesn,t get too frustrating...  Still plenty of lessons fo me to learn! |
I have had this problem too. Make sure the dark frames you are using have been taken with the same exposure time and ISO setting as the image frames you are using them on, preferably taken straight after you have finished capturing the images.
I once came up with the brilliant idea of combining all the dark frames I had ever taken into one master dark and tried to use it on an image ...... "WOW the background has gone all multicolored and green looking", I thought, "maybe that idea won't work then".
