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





    
        

            Undy
Andromeda Galaxy

Andromeda Galaxy

Technical card

Resolution: 5017x3423

Dates:Sept. 21, 2018

Frames: 405x30" ISO200 bin 1x1

Integration: 3.4 hours

Darks: ~18

Flats: ~20

Bias: ~20

Avg. Moon age: 11.43 days

Avg. Moon phase: 87.92%

Bortle Dark-Sky Scale: 7.00

Temperature: 15.00

Astrometry.net job: 2307951

RA center: 10.636 degrees

DEC center: 41.272 degrees

Pixel scale: 1.314 arcsec/pixel

Orientation: 248.674 degrees

Field radius: 1.108 degrees

Locations: Undy, Bydgoszcz, Kujawsko-Pomorskie, Poland

Data source: Backyard

Description

My best attempt yet at Andromeda Galaxy.

Sadly some of the faintest areas are very close to the sensor noise at 30s exposure and D5100 can't do any longer without an expensive shutter release, which wouldn't help anyway because I don't have autoguiding and even at 30s I often get star trails. Class 7 bortle sky doesn't help either - it's very hard to separate the galaxy from the skyglow in post.

Comments

Author

Undy
Undy
License: None (All rights reserved)
150
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Revisions

  • Andromeda Galaxy, 





    
        

            Undy
    Original
  • Final
    Andromeda Galaxy, 





    
        

            Undy
    E

E

Added some more integration time and finally fixed the orientation.

Sky plot

Sky plot

Histogram

Andromeda Galaxy, 





    
        

            Undy

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Low-Cost Astrophotography