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Contains:  Cocoon nebula, IC 5146
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IC5146: Cocoon Nebula, 





    
        

            Fritz
IC5146: Cocoon Nebula

IC5146: Cocoon Nebula

Technical card

Resolution: 6596x4874

Dates:Oct. 1, 2019Oct. 9, 2019Oct. 10, 2019

Frames:
Astronomik B 1.25": 33x300" -15C bin 1x1
Astronomik G 1.25": 36x300" -15C bin 1x1
Astronomik L 1.25": 100x300" -15C bin 1x1
Astronomik R 1.25": 27x300" -15C bin 1x1

Integration: 16.3 hours

Darks: ~25

Flats: ~25

Flat darks: ~25

Avg. Moon age: 8.56 days

Avg. Moon phase: 61.31%

Bortle Dark-Sky Scale: 5.00

Astrometry.net job: 2982508

RA center: 21h 53' 29"

DEC center: +47° 15' 36"

Pixel scale: 0.344 arcsec/pixel

Orientation: 270.817 degrees

Field radius: 0.392

Locations: Home, Orlando, Florida, United States

Data source: Backyard

Description

Taken from my backyard in Orlando, FL. We had some unusually clear skies here in September for about a week and I was able to catch some decent data on the Cocoon Nebula which I had never imaged before. It is still so wet out here that the secondary would dew up near 2 am - I now have a new secondary heater installed :)

IC 5146 is a reflection/emission nebula in the constellation Cygnus. The NGC description refers to IC 5146 as a cluster of 9.5 mag stars involved in a bright and dark nebula. It is located near the naked-eye star Pi Cygni, the open cluster NGC 7209 in Lacerta, and the bright open cluster M39. The cluster is about 4,000 ly away, and the central star that lights it formed about 100,000 years ago. The nebula is about 12 arcmins across, which is equivalent to a span of 15 light years.

Comments

Author

Fritz
Fritz
License: None (All rights reserved)
700
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Revisions

  • IC5146: Cocoon Nebula, 





    
        

            Fritz
    Original
  • IC5146: Cocoon Nebula, 





    
        

            Fritz
    B
  • Final
    IC5146: Cocoon Nebula, 





    
        

            Fritz
    C

B

Curves and crop adjustments

C

clipped the blue channel to reduce background glow

Sky plot

Sky plot

Histogram

IC5146: Cocoon Nebula, 





    
        

            Fritz