Celestial hemisphere:  Northern  ·  Constellation: Canes Venatici (CVn)  ·  Contains:  IC 4263  ·  M 51  ·  NGC 5194  ·  NGC 5195  ·  Whirlpool galaxy
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M51 - Whirlpool Galaxy, MGralike
M51 - Whirlpool Galaxy
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M51 - Whirlpool Galaxy

Getting plate-solving status, please wait...
M51 - Whirlpool Galaxy, MGralike
M51 - Whirlpool Galaxy
Powered byPixInsight

M51 - Whirlpool Galaxy

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Acquisition details

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Description

At the end of a long session shooting the B33 neighborhood, I did some additional shooting on M51. Although the session was mainly to check if my back focus was finally on target (nope), I discovered that in the final results vignetting really had become a problem. Because M51 was the "easiest" one to process in PixInsight, I tried that first heavily cropping the overall picture. This was doable because M51 was inside the vignetting circle :-)

In all my PixInsight skills aren't that great yet so despite there was even more nebulosity data, I lost some in the process despite my efforts and/or because of my efforts to reduce the noise / increase SNR.

- 24 x 120 seconds on gain 90

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M51 - Whirlpool Galaxy, MGralike

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Galaxies
Messier Catalog