NGC 7635 SH2-162 C 11 Bubble Nebula (Albert Christensen)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: Bubble Nebula · NGC 7635

NGC 7635 SH2-162 C 11 Bubble Nebula, Albert Christensen

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NGC 7635 SH2-162 C 11 Bubble Nebula

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NGC 7635 SH2-162 C 11 Bubble Nebula

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 (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☉. (Wikipedia)

Calm evening with no moon, clear with average seeing and transparency.
Tried various processing procedures experimenting. Did all narrowband only, all RGB only, and a couple of combinations of narrowband and RGB. Finally ended with combining (RSHa) for the Red, (GO) for the Green and (BO) for the Blue positions with RGB stars.

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B

B

Description: Reprocess

Reprocess SHO with RGB stars.

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Status	Basic success
Started	...
Astrometry.net job	6386691
PixInsight job	n/a
PixInsight queue size	n/a
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NGC 7635 SH2-162 C 11 Bubble Nebula

NGC 7635 SH2-162 C 11 Bubble Nebula

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NGC 7635 SH2-162 C 11 Bubble Nebula

NGC 7635 SH2-162 C 11 Bubble Nebula

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