Celestial hemisphere:  Northern  ·  Constellation: Canes Venatici (CVn)  ·  Contains:  HD117815  ·  IC 4263  ·  IC 4277  ·  IC 4278  ·  M 51  ·  NGC 5194  ·  NGC 5195  ·  NGC 5198  ·  Whirlpool Galaxy
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M51 Whirlpool galaxy, Lodewijk van Pol
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M51 Whirlpool galaxy

Getting plate-solving status, please wait...
M51 Whirlpool galaxy, Lodewijk van Pol
Powered byPixInsight

M51 Whirlpool galaxy

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Description

M51 is a gorgeous target but actually a little bit to dim and small for my 500 mm refractor. 

Odd thing: something went wrong with my flat frames which produced a big cross-like artifact on the stacked image. So I carefully selected 29 frames in APP with a minimum quality score of 0,8 and stacked those light frames without any calibration frame. Still a pleasing result.

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M51 Whirlpool galaxy, Lodewijk van Pol