SH2-158 4 weeks later (Joe Matthews)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: Bubble Nebula · HD218229 · HD218375 · HD218439 · HD218450 · HD219460 · HD219634 · HD220056 · HD220057 · HD220074 · HD220102 · HD220167 · HD220180 · HD220770 · HD220819 · HD221038 · HD240233 · HD240248 · HD240252 · HD240253 · HD240256 · HD240264 · LBN 540 · LBN 542 · LBN 543 · LBN 544 · LBN 547 · LBN 548 · LBN 549 · LDN 1220 · And 19 more.

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SH2-158 4 weeks later

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SH2-158 4 weeks later

A string of 3 clear nights and mornings in New Jersey and tonight(2023/10/04) looks to be another. My main intent tonight was to image SH2-158, hopefully the image isn't too much of a duplicate of my earlier work on September 14th, but I think this image has better detail. I am still attempting to do all processing with in SIRIL vs. using Affinity Photo for more coloring etc.. I am not done with this data and intend to try and get it closer to a Hubble pallet type coloring, but for now I am putting doing further work until a rainy day.

NGC7538 (SH2-158) is a region where numerous stars are in the early stages of being formed. The nebula is also home to one of the largest discovered high-mass protostars with a rotating disk that has a diameter of about ten times the diameter of our solar systems (about 800 AU). The protostellar phase is the earliest one in the process of stellar evolution and while we still don't know very much about high-mass protostars, it is assumed that they are surrounded by an accretion disk that drives molecular outflow, like the low-mass protostars. The accretion disk in NGC7538 is very young and extremely massive, and is in the process of forming one or more high-mass protostars. NGC7538 is about 7000 light years away in the constellation Cepheus

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Title: SH2-158 cropped

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Status	Advanced success
Started	...
Astrometry.net job	8544673
PixInsight job	1D28B3NVAD4IV81YMDXDXJ35BN1PTBUZ
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	23h13m32s.93
RA (top/left)	22h58m04s.24
RA (top/right)	23h20m09s.75
RA (bottom/right)	23h29m10s.24
RA (bottom/left)	23h06m11s.64

Dec (center)	+61°27′54″.1
Dec (top/left)	+61°16′45″.5
Dec (top/right)	+59°47′14″.7
Dec (bottom/right)	+61°32′24″.4
Dec (bottom/left)	+63°07′14″.7

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SH2-158 4 weeks later

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