Sh2-27: The Wrath of Khan (Brian Boyle)

Celestial hemisphere: Southern · Constellation: Ophiuchus (Oph) · Contains: 11 Sco · 13 Oph) · 13 zet Oph · 15 Sco · 15 psi Sco · 16 Sco · 17 Sco · 17 chi Sco · 18 Sco · 20 Oph · 3 Oph · 3 ups Oph · Graffias · Khan · LBN 12 · LBN 13 · LBN 16 · LBN 17 · LBN 20 · LBN 21 · LBN 22 · LBN 24 · LBN 30 · LBN 32 · LBN 35 · LBN 39 · LDN 105 · LDN 106 · LDN 121 · LDN 137 · And 38 more.

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Sh2-27: The Wrath of Khan

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Sh2-27: The Wrath of Khan

OK. So this was a real surprise. I didn't expect much from Sh2-27, an HII region located in the constellation of Ophiucus, just north oft he Blue Horse head. In my star atlas it is denoted by a large faint, largely unremarkable blob of emission. The survey images on Telescopius are difficult to interpret, since this emission feature spans many plate boundaries in the DSS. There only a small number of images on AB, and the nebula is intriguingly chameleon-like in the images that do exist. Some show a big ball of bright red emission, and some a more fragmentary structure with the red emission nebula intermingled with dark molecular clouds.

I am not sure which is the correct rendition, my resulting 3-panel mosaic revealed a complex shaped nebula strewn with molecular clouds covering a range of optical depths. I had not expected Sh2-27 to reveal so much detail, and there is certainly a lot more in here that deserves follow-up at local focal lengths.

[Subtitle was added later. Sh2-27 looks like a classic baddie space ship from Star Trek e.g. Shrike from Picard Season 3 & Nero's spaceship in the Star Trek JJ Abrahams movie.
Somewhat fitting - give the central star name.]

New Zealand Astrophotography
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Status	Advanced success
Started	...
Astrometry.net job	7636354
PixInsight job	K9ZKNZNHC03IWZTN09GXA9H0UU9DIN8J
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	16h33m32s.93
RA (top/left)	17h09m15s.55
RA (top/right)	16h03m37s.90
RA (bottom/right)	15h56m50s.32
RA (bottom/left)	17h04m53s.14

Dec (center)	-10°23′17″.10
Dec (top/left)	-06°46′56″.7
Dec (top/right)	-04°24′56″.6
Dec (bottom/right)	-13°47′01″.9
Dec (bottom/left)	-16°16′37″.7

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Sh2-27: The Wrath of Khan

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