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Contains:  Bubble nebula, M 52, M52, NGC 7635, NGC 7654, NGC7635, PK112-00.1, Sh2-162
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NGC 7635 Bubble Nebula & Open Cluster Messier 52, 


            Gebhard Maurer
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NGC 7635 Bubble Nebula & Open Cluster Messier 52

Technical card

Imaging telescopes or lenses:Sky-Watcher 200/1000 PDS

Imaging cameras:Canon EOS 600Da

Mounts:Sky-Watcher NEQ6 Pro Goto

Guiding telescopes or lenses:Lacerta MGEN2-Autoguider with 9x50 Finder Scope

Software:PixInsight PixInsinght 1.8

Filters:L-Pro 2"

Dates:Aug. 31, 2019

Frames:L-Pro 2": 40x420" ISO800

Integration: 4.7 hours

Darks: ~32

Flats: ~43

Bias: ~29

Avg. Moon age: 1.26 days

Avg. Moon phase: 1.77%

Mean FWHM: 4.00

Temperature: 18.00 job: 2907899

RA center: 23h 22' 17"

DEC center: +61° 18' 12"

Pixel scale: 0.883 arcsec/pixel

Orientation: 162.060 degrees

Field radius: 0.742 degrees

Resolution: 5054x3308

Locations: Backyard, Raglitz, Niederösterreich, Austria

Data source: Traveller


NGC 7635, also known as the Bubble Nebula, Sharpless 162 or Caldwell 11, is an 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. 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.



Gebhard Maurer
License: None (All rights reserved)

Sky plot

Sky plot


NGC 7635 Bubble Nebula & Open Cluster Messier 52, 


            Gebhard Maurer