SH2-173 (Bruce Donzanti)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: 12 Cas · HD1010 · HD1057 · HD1166 · HD1201 · HD1239 · HD1287 · HD1383 · HD1400 · HD1544 · HD1613 · HD1697 · HD1743 · HD1810 · HD1843 · HD1917 · HD1950 · HD2291 · HD236416 · HD236419 · HD2451 · HD2535 · HD2654 · HD3191 · HD861 · LBN 592 · LBN 593 · LDN 1280 · LDN 1282 · LDN 1283 · And 7 more.

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SH2-173

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SH2-173

Here is my version of Sh2-173, aka, The Phantom of the Opera Nebula. It is a faint emission nebula lying 8,800 light-years from Earth in the constellation Cassiopeia and is part of the Perseus arm of our Milky Way Galaxy. Its shape and dark dust clouds bear a resemblance to the mask worn by the Phantom of the Opera in the Broadway musical which my wife loves. Unfortunately, she said it looks more like a puppy dog😕. So much for my processing skills.

I really wanted to gather twice the data, but we have, once again, 7-10 days of clouds moving in, so the 12 hrs will have to do. That is a shame because I think I could have pulled so much more out of this faint, unusual nebula if I had more clear nights ahead. I was also surprised by the lack of OIII data.

Anyway, maybe some of you will like this version of the puppy dog nebula (geeze!) as overall I was very happy with it.

Original
Final
C

ASI 6200 MM Pro
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CMOS Imagers
Imaged with N.I.N.A.
Florida / Georgia Imagers
Narrowband imaging
Takahashi Refractors
Suburban Astrophotography
Takahashi FSQ 85 EDX
Light Polluted skies

A Collection of Recent and Favorite Images
Takahashi FSQ-85EDX Petzval Quadruplet

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Status	Advanced success
Started	...
Astrometry.net job	6469138
PixInsight job	2LXBZ7SWA8K3SV4XWW2960A7FMB63AK4
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	00h23m53s.60
RA (top/left)	00h23m15s.60
RA (top/right)	00h09m42s.32
RA (bottom/right)	00h24m27s.48
RA (bottom/left)	00h37m32s.95

Dec (center)	+61°47′34″.8
Dec (top/left)	+63°32′21″.9
Dec (top/right)	+62°20′04″.2
Dec (bottom/right)	+60°02′49″.3
Dec (bottom/left)	+61°09′47″.9

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