Celestial hemisphere:  Northern  ·  Constellation: Canes Venatici (CVn)  ·  Contains:  IC 4277  ·  M 51  ·  NGC 5194  ·  NGC 5195  ·  Whirlpool Galaxy
M51, Whirlpool Galaxy, emmanuel_valin
M51, Whirlpool Galaxy
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M51, Whirlpool Galaxy

M51, Whirlpool Galaxy, emmanuel_valin
M51, Whirlpool Galaxy
Powered byPixInsight

M51, Whirlpool Galaxy

Equipment

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Acquisition details

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Description

Hi all,

I share with you this LRGB image of M51, Whirlpool Galaxy.

Happy to receive any advice and constructive critique to continue to progress!

Image taken in three sessions at the very beginning of May 2022 in my backyard in France, under Bortle 7 sky, unfortunately next to a lamp post and with some high altitude clouds.

L: 117x180s at -15 degrees
A: 10x180s at -15 degrees
V: 10x180s at -15 degrees
B: 10x180s at -15 degrees
Total: 7h20

Processing: PixInsight & Photoshop
L: Dynamic Crop / DBE / EZ Decon / EZ Denoise / Histogram Transformation
RGB: Dynamic Crop / DBE / Channel Combination / PCC / EZ Denoise / Arcsinhstretch
then LRGB: LRGB Combination / Color Saturation & Curves

A crucial step was to bring out the details in Photoshop using a technique called APF-R. Enhanced details but more noise too…  Instructions here: http://www.cedic.at/apfr/vid002.php

My setup:
HEQ5 mount
SW Esprit 100 refractor
ASI183MM camera
Focuser ZWO EAF
Autoguiding: 50mm guidescope and ASI120mc
Software: EQMOD, APT, PHD2

Comments

Sky plot

Sky plot

Histogram

M51, Whirlpool Galaxy, emmanuel_valin

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