Celestial hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  Bode's galaxy  ·  Bode's nebulae  ·  M 81  ·  NGC 3031
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M81, second version of a LRHaGB crowd picture, Niels V. Christensen
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M81, second version of a LRHaGB crowd picture

Getting plate-solving status, please wait...
M81, second version of a LRHaGB crowd picture, Niels V. Christensen
Powered byPixInsight

M81, second version of a LRHaGB crowd picture

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Description

M81 a LRHaGB-color picture from Denmark, Sjaelland area.

A kind of a crowd-imaging picture with few pictures/stacks integrated into one cropped color picture.

It's the second version of a M81 crowd picture, where I have used Morten la Cours FOV as a reference for integration/re-scale of the other pictures FOV.

Colors and luminance background in this picture are taken from the first M81 crowd version here:

https://astrob.in/336650/C/

Notes:

Except the Red/Ha blend feature, where I used Mortens Ha info./exposures.

Niels Haagh's rgb stacks used as a color layer/info. (with a given opacity) and as an artificial lum stack.

Main contributers for this picture:

Mr. Morten la Cour

Exposure details & subs taken 18 March & 1 April-2018:

L=20x300sec + 19x15sec

Ha=48x300sec

Mr. Niels Haagh

Exposure details & subs taken 18/19 March-2018:

R=13x300sec

G=21x300sec

B=10x300sec

Integration of the individuel contributers calibrated LRGB,Ha,color stacks was done by me,

where I used CCDStack2, RegiStar and Adobe Photoshop CS6 programs/features.

Stack info. available (as 16bit Tiff) if needed/on request.

Kind regards Niels

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M81, second version of a LRHaGB crowd picture, Niels V. Christensen

In these public groups

"Nordish by nature"
Messier Objects