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Contains:  M 31, Great Nebula in Andromeda, NGC 224, M 32, NGC 221, M 110, NGC 205
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M31 Andromeda Galaxy with Bahtinovic field stars, 





    
        

            StarGale
M31 Andromeda Galaxy with Bahtinovic field stars

M31 Andromeda Galaxy with Bahtinovic field stars

Technical card

Resolution: 1268x816

Dates:July 27, 2014

Frames: 33x60" ISO3200

Integration: 0.6 hours

Avg. Moon age: 0.49 days

Avg. Moon phase: 0.28%

Temperature: 15.00

Astrometry.net job: 341638

RA center: 10.254 degrees

DEC center: 41.271 degrees

Orientation: -96.236 degrees

Field radius: 0.912 degrees

Locations: Suburban backyard N/O Seattle, Lynnwood, WA, United States

Description

I forgot to take the Bahtinov focusing mask off, so the Bahtinovic field stars. The focusing mask cut the light throughput by 50% and made the fainter stars smudgy. I reduced the image to 25 percent after processing in full resolution in StarTools. Image B increases the contrast and desaturates the background a bit to remove some of the reddish background noise.

The temperature that night was fairly steady after the cooldown to 54 degrees F. I took no darks, bias frames, or flats. May take some darks and bias frames for this temperature and ISO at a later date.

Image C: Wavelet sharpen Scales 2 and 3 with amount=1000 percent to make dust lanes sharper. Also makes star brighter and sharper.

The G11 mount was unguided with PEC turned off.

Comments

Author

StarGale
StarGale
License: None (All rights reserved)
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Revisions

  • M31 Andromeda Galaxy with Bahtinovic field stars, 





    
        

            StarGale
    Original
  • M31 Andromeda Galaxy with Bahtinovic field stars, 





    
        

            StarGale
    B
  • Final
    M31 Andromeda Galaxy with Bahtinovic field stars, 





    
        

            StarGale
    C

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M31 Andromeda Galaxy with Bahtinovic field stars, 





    
        

            StarGale