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The first NGC253 pic is one from 2014.
13 X 15second subs, equal amount of darks at iso 3200, canon 1100d, 10"f4.7 newt, no guiding, stacked in DSS. Tracked using an old 1970's cave mount RA drive only(second pic).
The second 253 pic is from October this year. Same scope but now on a Heq5 pro mount and guided with a finder guider, zwo120mc and Phd2, a stack of 19 x 2min subs @ iso 800, canon 1100d, Baader coma corrector added, stacked with DSS and processed with PS cs5.
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