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Contains:  The star 74Cyg
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Sh2 118 H-alpha RGB, 





    
        

            jerryyyyy
Sh2 118 H-alpha RGB

Sh2 118 H-alpha RGB

Technical card

Resolution: 3173x2443

Dates:Nov. 25, 2019

Frames:
Astrodon Blue Tru-Balance E-Series Gen 2: 15x240" bin 1x1
Astrodon Green Tru-Balance E-Series Gen 2: 15x240" bin 1x1
Astrodon H-alpha 5nm: 17x1800" bin 1x1
Astrodon Red Tru-Balance E-Series Generation 2: 15x240" bin 1x1

Integration: 11.5 hours

Avg. Moon age: 28.30 days

Avg. Moon phase: 1.70%

Astrometry.net job: 3077255

RA center: 21h 37' 7"

DEC center: +40° 13' 15"

Pixel scale: 1.220 arcsec/pixel

Orientation: 359.618 degrees

Field radius: 0.678

Locations: Stanford Faculty Observatory, Stanford, California, United States

Data source: Own remote observatory

Remote source: Non-commercial independent facility

Description

Sh 2-118 is one of the largest nebulae in apparent size in the Sharpless catalog, but essentially nothing about it has been published in the scientific literature.

Examining this region in hydrogen-alpha suggests that Sh 2-118 is joined to the equally mysterious Sh 2-113, Sh 2-114 and Sh 2-123 in a long ridge of nebulosity south and south-east of Sh 2-117, the North American nebula. Sh 2-114, Sh 2-118 and Sh 2-123 have distance estimates of about 4000 parsecs. If this ridge is also at 4000 parsecs, it must be enormous.

From: http://galaxymap.org/cat/list/sharpless/111

Comments

Author

jerryyyyy
jerryyyyy
License: None (All rights reserved)
681
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Revisions

  • Sh2 118 H-alpha RGB, 





    
        

            jerryyyyy
    Original
  • Final
    Sh2 118 H-alpha RGB, 





    
        

            jerryyyyy
    B

B

Blue star brought out a little more

Sky plot

Sky plot

Histogram

Sh2 118 H-alpha RGB, 





    
        

            jerryyyyy