Celestial hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  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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38 Hours on M101 in LHaRGB, Charles O'Brien
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38 Hours on M101 in LHaRGB

Getting plate-solving status, please wait...
38 Hours on M101 in LHaRGB, Charles O'Brien
Powered byPixInsight

38 Hours on M101 in LHaRGB

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Here is 38 hours on M101 in LHaRGB! I sunk about  15 hours into the luminance data and 13.3 hours into the Ha data.

In respect to the Ha data, I used Continuum Subtraction to isolate it out a little more, and I think it really helped to cause the Ha to come forward in the image.

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38 Hours on M101 in LHaRGB, Charles O'Brien