Celestial hemisphere:  Northern  ·  Constellation: Coma Berenices (Com)  ·  Contains:  M 91  ·  NGC 4548
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M91 - LRGB, Michael J. Mangieri
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M91 - LRGB

Getting plate-solving status, please wait...
M91 - LRGB, Michael J. Mangieri
Powered byPixInsight

M91 - LRGB

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Description

Continuing my quest to get all 110 Messier objects completed, M90 and M91 were the next ones in my queue. This LRGB image of M91 is satisfying and will serve the purpose of the contest, but the 60sec subs really didn't collect enough data to work with for a quality image. The mean ADU of the subs were in the 550-580 range and the darks were 500 so stretching 50-80 ADU of data generally doesn't leave you with a lot to work with. I actually did not apply any ABE/DBE or MLT processing to this image because of the lack of data. But here it is. I will revisit this object next galaxy season for a better treatment.

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M91 - LRGB, Michael J. Mangieri