Hemisphere:  Northern  ·  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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The Andromeda Galaxy, 


            William Maxwell
The Andromeda Galaxy
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The Andromeda Galaxy

Technical card

Imaging telescopes or lenses: Astro Tech AT66ED

Imaging cameras: Canon T2i/550D  ·  Canon 500D Canon T1i

Mounts: Celestron CG-4 MotorDrive

Guiding telescopes or lenses: MEADE 50mm Finder Guidescope

Guiding cameras: ZWO ASI120MM

Focal reducers: Astro Tech 0.8x Reducer/Flattener

Software: Astro Pixel Processor  ·  Adobe Photoshop CS4 Photoshop CS4

Dates:July 29, 2019July 13, 2020July 14, 2020July 15, 2020July 18, 2020

200x60" ISO800

Integration: 16.5 hours

Darks: ~200

Bias: ~100

Avg. Moon age: 24.87 days

Avg. Moon phase: 24.60%

Bortle Dark-Sky Scale: 4.00

Basic astrometry details

Astrometry.net job: 3794542

RA center: 0h 42' 58"

DEC center: +41° 12' 10"

Pixel scale: 2.716 arcsec/pixel

Orientation: 215.923 degrees

Field radius: 2.236 degrees

Resolution: 4876x3367

Data source: Backyard


A bit of an experiment in that I tried much longer integration than I usually do, by about 3-4x. Better, but certainly a demonstration of diminishing returns even with the ability to toss out a greater percentage of marginal subs.



William Maxwell
License: None (All rights reserved)

Sky plot

Sky plot


The Andromeda Galaxy, 


            William Maxwell

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