Sharpless Quintet (Sh2-254, Sh2-255/IC 2162, Sh2-256, Sh2-257, Sh2-258) (estabrook)

Celestial hemisphere: Northern · Constellation: Orion (Ori) · Contains: HD252622 · HD252712 · HD252713 · HD252740 · HD252788 · HD252789 · HD252902 · HD252903 · HD252904 · HD252925 · HD252949 · HD252950 · HD252973 · HD253002 · HD253022 · HD253109 · HD253158 · HD253159 · HD253160 · HD253162 · HD253188 · HD253218 · HD253219 · HD253220 · HD253246 · HD253247 · HD253248 · HD253275 · HD253277 · HD253278 · And 67 more.

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Sharpless Quintet (Sh2-254, Sh2-255/IC 2162, Sh2-256, Sh2-257, Sh2-258)

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Sharpless Quintet (Sh2-254, Sh2-255/IC 2162, Sh2-256, Sh2-257, Sh2-258)

Sharpless Quintet (Sh2-254, Sh2-255/IC 2162, Sh2-256, Sh2-257, Sh2-258). I have seen star clusters and galaxy clusters, but I don't recall having seen a nebula cluster. Thanks to Astrobin members @Kurt Zeppetello, @Michael Feigenbaum, and @Erik Frank for pointing me to this massive star-forming complex, yet another overlooked gem in Orion. The very faint Sh2-259 is here too, photobombing its siblings at the bottom of the frame.

I spent two partly-cloudy nights on this one, during which I captured just 128 x 120s exposures for 4.2 hours of integration. It's still quite dim--stubbornly so--but I'll have to wait until next year to catch more photons, as Orion has already chased the Seven Sisters behind the trees in my yard.

(Captured: C6, AVX, Hyperstar, ASI183MC Pro, Optolong L-Enhance filter. Processed: Astro Pixel Processor, Photoshop, Star Xterminator, Gradient Xterminator, and Topaz DeNoise AI.)

Original
Final
C

NOVAC

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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

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Status	Advanced success
Started	...
Astrometry.net job	5580774
PixInsight job	CYNORKJ0KRAVCLJSE1WUX0AULN5SNLWN
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	06h12m32s.12
RA (top/left)	06h16m31s.77
RA (top/right)	06h11m24s.80
RA (bottom/right)	06h08m33s.20
RA (bottom/left)	06h13m39s.29

Dec (center)	+18°00′18″.4
Dec (top/left)	+18°16′13″.5
Dec (top/right)	+18°57′12″.1
Dec (bottom/right)	+17°44′05″.1
Dec (bottom/left)	+17°03′26″.5

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Sharpless Quintet (Sh2-254, Sh2-255/IC 2162, Sh2-256, Sh2-257, Sh2-258)

Sharpless Quintet (Sh2-254, Sh2-255/IC 2162, Sh2-256, Sh2-257, Sh2-258)

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Sharpless Quintet (Sh2-254, Sh2-255/IC 2162, Sh2-256, Sh2-257, Sh2-258)

Sharpless Quintet (Sh2-254, Sh2-255/IC 2162, Sh2-256, Sh2-257, Sh2-258)

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