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Showing results for tags 'triad filter'.
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My effort from Derry last night - once I remembered to remove the cover from the field flattener. Doh. I know the North America Nebula is done to death, but this is my first time imaging it, and also my first time trying the Triad filter with my Nikon. I'm in the middle of the city but I was able to take 5 min subs! I processed in PixInsight, but didn't even have to do background extraction. I used photometric colour calibration to restore natural colour and then just did a bit of mild tinkering. I'm impressed by the Triad filter on my first try. Comments welcome - maybe I should try a star mask and try to bring out star colours? Barry 22 X 5 min subs - 1hr 50min integration PixInsight for calibration / registration / processing Mount - Vixen AXD2 Scope - TEC 180FL Camera - Nikon D750