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Uploaded 22-Jun-20
Taken 22-Jun-20
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5 of 29 photos
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Categories & Keywords

Category:Scenic
Subcategory:Night Sky
Subcategory Detail:
Keywords:Nebula, Bubble, NGC7635
Photo Info

Dimensions4091 x 2957
Original file size8.04 MB
Image typeJPEG
Color spacesRGB
Date modified22-Jun-20 13:46
Shooting Conditions

Camera makeZWO
Camera model294MC
NGC 7635  The Bubble Nebula

NGC 7635 The Bubble Nebula

About this Object:
NGC 7635, also known as the Bubble Nebula, Sharpless 162, or Caldwell 11, is an H II region[1] 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[1] magnitude young central star, SAO 20575 (BD+60°2522).[7] 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.[7] It was discovered in 1787 by William Herschel.[5] The star BD+60°2522 is thought to have a mass of about 44 M☉.

About this photo:
Location: Spring Hill Observatory Stow Massachusetts
Telescope: Astrotech RC8 @ F8
Mount: CGEM
Guiding: Orion StarShoot AutoGuider / OAG
Camera: ZWO 294MC Pro
Exposure: 20 x 300 sec (100 min.)
Acquisition: SharpCap v3.2 Darks, Flats
Processing: PixInsight v. 1.8
Post-processing: Adobe Photoshop
Date(s): June 16, 2020

NGC 7635 The Bubble Nebula
20 Frames x 5 min = 100 Min
ZWO 294MC
Astrotech RC8