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Contains:  Bubble nebula, NGC 7635
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The Bubble Nebula, NGC7635, Caldwell 11, 





    
        

            Steven Bellavia
The Bubble Nebula, NGC7635, Caldwell 11

The Bubble Nebula, NGC7635, Caldwell 11

Technical card

Resolution: 4200x2800

Dates:Aug. 28, 2018Sept. 3, 2018

Frames:
Optolong 7nm Ha 2": 48x300" (gain: 140.00) -15C bin 1x1
IDAS UIBAR-III: 120x90" (gain: 140.00) -15C bin 1x1

Integration: 7.0 hours

Darks: ~27

Avg. Moon age: 19.58 days

Avg. Moon phase: 70.96%

Bortle Dark-Sky Scale: 4.00

Temperature: 22.00

Astrometry.net job: 2233716

RA center: 23h 20' 35"

DEC center: +61° 11' 27"

Pixel scale: 0.895 arcsec/pixel

Orientation: 178.665 degrees

Field radius: 0.628

Data source: Backyard

Description

The Bubble Nebula, NGC 7635, Caldwell 11, Sharpless 162, is an H-II region, emission nebula, in the constellation Cassiopeia. The "bubble" is created by the stellar wind from a massive hot, 8.7 magnitude young central star, SAO 20575. The nebula is near a giant molecular cloud which contains the expansion of the bubble nebula, while itself being excited by the hot central star, causing it to glow. It was discovered in 1787 by William Herschel.

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bellavia
Steven Bellavia
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            Steven Bellavia
    Original
  • The Bubble Nebula, NGC7635, Caldwell 11, 





    
        

            Steven Bellavia
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The Bubble Nebula, NGC7635, Caldwell 11, 





    
        

            Steven Bellavia