NGC7635 (Joe Matthews)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: 4 Cas · Bubble Nebula · HD219460 · HD219634 · HD220056 · HD220057 · HD220074 · HD220102 · HD220130 · HD220167 · HD220180 · HD220770 · HD220819 · HD240233 · HD240248 · HD240253 · HD240256 · HD240264 · HD240295 · LBN 540 · LBN 542 · LBN 543 · LBN 544 · LBN 547 · LBN 548 · LBN 549 · LDN 1229 · LDN 1230 · LDN 1231 · LDN 1233 · And 10 more.

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NGC7635

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NGC7635

This is my first attempt to image NGC7635 (Bubble Nebula). The moon was full and plenty of light pollution, I used my clip-in filter, I wonder if I would have gotten better results without the LP filter, maybe I will try again tonight.

The Bubble Nebula (NGC 7635) is a peculiar 12th magnitude planetary nebula. The open star cluster M 52 appears nearby.

It was discovered in 1787 by Friedrich Wilhelm Herschel. With an 8 telescope, the nebula is visible as an extremely faint and large shell around the magnitude 8.7 star SAO 20575. The nearby 7th magnitude star on the west hinders observation, but one can view the nebula using averted vision. Using a 16 to 18-inch scope, one can see that the faint nebula is irregular, and elongated in the north-south direction.

NGC 7635 is about 11,000 light years away. The "bubble" in NGC 7635 is about 10 light years across. It was created by a fierce stellar wind from the hot, young, massive central star, which has blasted out the structure of glowing gas against denser material in a surrounding molecular cloud. The nebula is being energized by the hot central star, causing it to glow. The central star SAO 20575 is thought to have a mass of 10-20 solar masses.

Information on NGC7635 from -SkySafari

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Status	Advanced success
Started	...
Astrometry.net job	6404634
PixInsight job	KT1WG0JPH5SHECYBL5RRN5OT106M1VA5
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	23h20m17s.689
RA (top/left)	23h13m07s.204
RA (top/right)	23h12m58s.455
RA (bottom/right)	23h26m58s.561
RA (bottom/left)	23h28m07s.624

Dec (center)	+61°14′36″.37
Dec (top/left)	+62°21′08″.88
Dec (top/right)	+60°10′24″.48
Dec (bottom/right)	+60°06′38″.19
Dec (bottom/left)	+62°17′19″.24

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