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Contains:  Great Nebula in Andromeda, M 110, M 31, M 32, NGC 205, NGC 221, NGC 224
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M31 "The Andromeda Galaxy", 


            Peter Webster
M31 "The Andromeda Galaxy"
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M31 "The Andromeda Galaxy"

Technical card

Dates:Oct. 6, 2016

AstronomiK O3 Filter 6nm: 3x300" (gain: 19.00) -25C bin 2x2
Astronomik Ha 6nm Astronomik Ha 6nm: 62x300" (gain: 19.00) -25C bin 2x2
Astronomik CLS / CCD 36 mm, R,G,B: 166x120" (gain: 19.00) -25C bin 2x2

Integration: 10.9 hours

Darks: ~50

Flats: ~50

Bias: ~50

Avg. Moon age: 4.93 days

Avg. Moon phase: 25.11%

Bortle Dark-Sky Scale: 5.00

Basic astrometry details job: 2990477

RA center: 0h 42' 30"

DEC center: +41° 17' 49"

Pixel scale: 1.564 arcsec/pixel

Orientation: 214.295 degrees

Field radius: 1.189 degrees

Resolution: 4200x3509

Locations: Home Observatory, NESTON, WIRRAL, United Kingdom

Data source: Backyard


Taken over many months between 2016 & 2017 using a Skywatcher Esprit 80ED and a QHY9s mono camera. Data captured in LRGB Ha & O3. Processed in Astro Pixel Processor (APP) and Photoshop.



Peter Webster
License: None (All rights reserved)


  • M31 "The Andromeda Galaxy", 


            Peter Webster
  • Final
    M31 "The Andromeda Galaxy", 


            Peter Webster


Description: A slight lift in contrast applied.

Sky plot

Sky plot


M31 "The Andromeda Galaxy", 


            Peter Webster