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Contains:  Bubble nebula, NGC 7635
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NGC 7635 Bubble Nebula in the Hubble Palette, 





    
        

            Douglas J Struble
NGC 7635 Bubble Nebula in the Hubble Palette

NGC 7635 Bubble Nebula in the Hubble Palette

Technical card

Resolution: 6008x4800

Dates:July 5, 2017July 6, 2017Aug. 16, 2017July 3, 2018July 10, 2018

Frames:
Astrodon Ha 5nm: 96x240" (gain: 139.00) -20C bin 1x1
Astrodon Ha 5nm: 111x120" (gain: 201.00) -20C bin 1x1
Astrodon OIII 3nm: 126x240" (gain: 139.00) -20C bin 1x1
Astrodon OIII 3nm: 325x120" (gain: 201.00) -20C bin 1x1
Astrodon SII 3nm: 132x120" (gain: 201.00) -20C bin 1x1

Integration: 33.7 hours

Darks: ~50

Flats: ~50

Bias: ~250

Avg. Moon age: 18.70 days

Avg. Moon phase: 60.39%

Bortle Dark-Sky Scale: 6.20

Astrometry.net job: 2146275

RA center: 350.166 degrees

DEC center: 61.179 degrees

Pixel scale: 0.192 arcsec/pixel

Orientation: 290.545 degrees

Field radius: 0.205 degrees

Data source: Backyard

Description

NGC 7635, also called the Bubble Nebula, Sharpless 162, or Caldwell 11, is a H II region emission nebula in the constellation Cassiopeia. It lies close to the direction of the open cluster Messier 52. The "bubble" is created by the stellar wind from a massive hot, 8.7 magnitude young central star, SAO 20575 (BD+60°2522). 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. The star BD+60°2522 is thought to have a mass of about 44 M☉.

Comments

Author

dugstruble
Douglas J Struble
License: None (All rights reserved)
1991
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Revisions

  • NGC 7635 Bubble Nebula in the Hubble Palette, 





    
        

            Douglas J Struble
    Original
  • Final
    NGC 7635 Bubble Nebula in the Hubble Palette, 





    
        

            Douglas J Struble
    B

B

There were some artifacts I didn't care for at full resolution I fixed and cropped it in a little tighter.

Sky plot

Sky plot

Histogram

NGC 7635 Bubble Nebula in the Hubble Palette, 





    
        

            Douglas J Struble