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Combination of 60 minutes (4 @ 10 min; 1 at 20 min.) taken over 2 nights. Dark subtraction and digital processing in ImagesPlus. Aligned and combined using Registar.
10 min @ ISO 800
20 min @ ISO 800
After some reading, decided to image at ISO 400.
3x10 min @ ISO 400
20060917-20061015-M31-Comb01-tp+.jpg
All images copyright William J. Shaheen, unless otherwise noted. Do not use or distribute without prior consent.