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Contains:  NGC 6946, NGC 6939
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Fireworks Galaxy (NGC 6946) and Ghost Bush Cluster (NGC 6939), 





    
        

            Luca Marinelli
Fireworks Galaxy (NGC 6946) and Ghost Bush Cluster (NGC 6939)

Fireworks Galaxy (NGC 6946) and Ghost Bush Cluster (NGC 6939)

Technical card

Resolution: 4780x3368

Dates:July 9, 2018July 11, 2018July 18, 2018

Frames:
Astrodon Tru-Balance Gen2 E-Series - B 36mm: 60x90" (gain: 54.00) -20C bin 1x1
Astrodon Tru-Balance Gen2 E-Series - G 36mm: 60x90" bin 1x1
Astrodon Tru-Balance Gen2 E-Series - R 36mm: 40x180" bin 1x1
Hutech IDAS LPS-P2 36mm Filter: 225x60" (gain: 54.00) -20C bin 1x1
Astrodon Narrowband 3nm Ha: 25x360" (gain: 120.00) -20C bin 1x1

Integration: 11.2 hours

Darks: ~40

Flats: ~30

Flat darks: ~30

Bias: ~100

Avg. Moon age: 19.69 days

Avg. Moon phase: 19.37%

Bortle Dark-Sky Scale: 5.00

Mean SQM: 19.60

Astrometry.net job: 2163687

RA center: 308.336 degrees

DEC center: 60.364 degrees

Pixel scale: 0.932 arcsec/pixel

Orientation: 87.010 degrees

Field radius: 0.757 degrees

Locations: Home Observatory, Schenectady, New York, United States

Data source: Backyard

Description

The Fireworks Galaxy (NGC 6946) is a spiral galaxy 10 million light-years away, on the border between the constellations Cepheus and Cygnus. This beautiful face-on spiral spans nearly 40,000 light-years across, and is seen through a field of foreground stars from our Milky Way Galaxy.

NGC 6946 is undergoing a tremendous burst of star formation with no obvious cause. In many cases spirals light up when interacting with another galaxy, but NGC 6946 appears relatively isolated in space.

The data was acquired over four nights in LRGB and Ha to highlight star forming areas in the galaxy.

Comments

Author

lucam_astro
Luca Marinelli
License: None (All rights reserved)
2362
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Revisions

  • Fireworks Galaxy (NGC 6946) and Ghost Bush Cluster (NGC 6939), 





    
        

            Luca Marinelli
    Original
  • Final
    Fireworks Galaxy (NGC 6946) and Ghost Bush Cluster (NGC 6939), 





    
        

            Luca Marinelli
    B

B

Moved the black point up a bit, to avoid the look of clipped black sky.

Sky plot

Sky plot

Histogram

Fireworks Galaxy (NGC 6946) and Ghost Bush Cluster (NGC 6939), 





    
        

            Luca Marinelli