Celestial hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  HD122865  ·  M 101  ·  NGC 5447  ·  NGC 5449  ·  NGC 5450  ·  NGC 5451  ·  NGC 5453  ·  NGC 5455  ·  NGC 5457  ·  NGC 5461  ·  NGC 5462  ·  NGC 5471  ·  Pinwheel galaxy
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M101 -- The Pinwheel Galaxy, David Andra
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M101 -- The Pinwheel Galaxy

Getting plate-solving status, please wait...
M101 -- The Pinwheel Galaxy, David Andra
Powered byPixInsight

M101 -- The Pinwheel Galaxy

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Description

This image of Messier 101, the Pinwheel Galaxy, is composed of nearly 14 hours of HaLRGB. The imaging scope was the Celestron EdgeHD 11 using to focal reducer to drop from f10 to f7. Even at f7, the focal length was near 2 meters which was hard to work with given the chronically bad seeing this time of year. Light pollution made the broadband subs harder to process but I found that Astro Pixel Processor has a pretty good light pollution reduction tool that I used after stacking.

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M101 -- The Pinwheel Galaxy, David Andra

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