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Contains:  NGC 5198, NGC 5195, Whirlpool galaxy, M 51, NGC 5194, IC 4263, NGC 5173, NGC 5169
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M51 wide field, 





    
        

            StarGale
M51 wide field

M51 wide field

Technical card

Resolution: 5128x3387

Dates:May 29, 2014

Frames: 95x60" ISO1600

Integration: 1.6 hours

Darks: ~29

Flats: ~40

Bias: ~20

Avg. Moon age: 0.70 days

Avg. Moon phase: 0.56%

Temperature: 8.00

Astrometry.net job: 290096

RA center: 202.505 degrees

DEC center: 47.215 degrees

Orientation: 82.580 degrees

Field radius: 0.929 degrees

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

Description

My best M51 to date, taken with new AT8IN and unmodified Canon 60D. Unguided without PEC. Temperature was a steady 46deg F. There was a bad gradient, left some of it in the image so faint fuzzies would be visible.

Image B: Increased contrast slightly in the jpeg file to reduce the background noise which was very noticeable at full resolution though not so bad when image is reduced to fit the monitor. This also removed a tiny bit of nebulousness in M51 and the faint fuzzies,

Image C: Another very small increase contrast to remove remaining background noise.

Comments

Author

StarGale
StarGale
License: None (All rights reserved)
3181
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Revisions

  • M51 wide field, 





    
        

            StarGale
    Original
  • M51 wide field, 





    
        

            StarGale
    B
  • Final
    M51 wide field, 





    
        

            StarGale
    C

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Histogram

M51 wide field, 





    
        

            StarGale