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Contains:  M 31, Great Nebula in Andromeda, NGC 224, M 32, NGC 221, M 110, NGC 205
Getting plate-solving status, please wait...
Andromeda Galaxy (M31), 


            Dan Gallo
Andromeda Galaxy (M31)

Technical card

Resolution: 2784x4100

Dates:Sept. 1, 2019

Frames:Optolong L-Pro 2": 250x30" -15C bin 1x1

Integration: 2.1 hours

Darks: ~100

Avg. Moon age: 2.42 days

Avg. Moon phase: 6.47%

Bortle Dark-Sky Scale: 8.00 job: 2899095

RA center: 10.555 degrees

DEC center: 41.238 degrees

Pixel scale: 1.544 arcsec/pixel

Orientation: 177.983 degrees

Field radius: 1.063 degrees

Locations: Home, Foster City, California, United States

Data source: Backyard


I was quite surprised by how much detail I could pull out of this data from my light polluted backyard (Bortle Class 7-8). The DBE process in PixInsight really helped here!
250 light frames (30 seconds each) and 100 dark frames. No flat or bias frames were used.



Dan Gallo
License: None (All rights reserved)


  • Andromeda Galaxy (M31), 


            Dan Gallo
  • Final
    Andromeda Galaxy (M31), 


            Dan Gallo


De-saturated the background to make it more black.

Sky plot

Sky plot


Andromeda Galaxy (M31), 


            Dan Gallo

In these public groups

Celestron RASA