Hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  Bode's nebulae  ·  M 81  ·  M 82  ·  NGC 2976  ·  NGC 3031  ·  NGC 3034  ·  NGC 3077
Getting plate-solving status, please wait...
M81, M82 and surrounding IFN, 



    
        

            Nicolas Kizilian
M81, M82 and surrounding IFN
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M81, M82 and surrounding IFN

Getting plate-solving status, please wait...
M81, M82 and surrounding IFN, 



    
        

            Nicolas Kizilian
M81, M82 and surrounding IFN
Powered byPixInsight

M81, M82 and surrounding IFN

Equipment

Imaging Telescopes Or Lenses
William Optics Zenithstar 66
Imaging Cameras
Moravian G2-8300
Mounts
Sky-Watcher AZ-EQ6 GT
Filters
L · Astrodon LRGB · astrodon Ha 5nm
Accessories
William Optics flat 6
Software
Photoshop C6 · PixInsight 1.8 · Sequence Generator Pro
Guiding Telescopes Or Lenses
SkyWatcher Finder/Guider 9x50
Guiding Cameras
QHY5L-IIc

Acquisition details

Dates:
May 5, 2018 ·  May 6, 2018 ·  May 7, 2018 ·  May 8, 2018
Frames:
Astrodon LRGB: 54x300" (4h 30') bin 1x1
L: 39x600" (6h 30') bin 1x1
astrodon Ha 5nm: 12x600" (2h) bin 1x1
Integration:
13h
Avg. Moon age:
21.18 days
Avg. Moon phase:
60.02%

Basic astrometry details

Astrometry.net job: 2056508

RA center: 09h55m11s.5

DEC center: +69°2443

Pixel scale: 3.454 arcsec/pixel

Orientation: 94.646 degrees

Field radius: 2.002 degrees

Resolution: 3332x2514

Data source: Unknown

Description

While waiting for the big nebulae next summer, I tried my hand at capturing the two famous galaxies M81 and M82, highlighting the surrounding IFN.

This is a very dense region for galaxies, there are not less than 126 galaxies in this image !

What's the IFN ? The iFN is high galactic latitude nebulae that are illuminated not by a single star (as most nebula in the plane of the Galaxy are) but by the energy from the integrated flux of all the stars in the Milky Way.

Comments

Sky plot

Sky plot

Histogram

M81, M82 and surrounding IFN, 



    
        

            Nicolas Kizilian