Hemisphere:  Northern  ·  Constellation: Andromeda (And)  ·  Contains:  Andromeda Galaxy  ·  M 110  ·  M 31  ·  M 32  ·  NGC 205  ·  NGC 221  ·  NGC 224  ·  The star 32And  ·  The star νAnd
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M31 and its outer regions., 



    
        

            Olly Penrice
M31 and its outer regions.
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M31 and its outer regions.

Technical card


Basic astrometry details

Astrometry.net job: 4008581

RA center: 0h 42' 48"

DEC center: +41° 15' 36"

Pixel scale: 5.155 arcsec/pixel

Orientation: 241.201 degrees

Field radius: 2.486 degrees


Resolution: 2969x1800

Data source: Backyard

Description

Two panel mosaic using Tak FSQ106N, Atik 11000 and Mesu 200 in L HaRGB. The idea was to try and catch as much of the outer glow as possible so I went for 30 minute luminance subs, which certainly helped. I also used some short TEC140 subs to try to reach into the core in luminance. In this reprocess of older data I used Starnet++ which wasn't available at the time and has helped with star reduction. I also followed the Hubble team on colour, cooling my original reds, lessening the intensity of the blues and generally going for lower saturation.

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M31 and its outer regions., 



    
        

            Olly Penrice