Sh2-252 MonkeyHead Nebula in SHO Hubble (David Payne)

Celestial hemisphere: Northern · Constellation: Orion (Ori) · Contains: HD252159 · HD252160 · HD252264 · HD252297 · HD252325 · HD252326 · HD252327 · HD252328 · HD252381 · HD252382 · HD252409 · HD252410 · HD252464 · HD252509 · HD252559 · HD252617 · HD252675 · HD252709 · HD252710 · HD252738 · HD252761 · HD42088 · IC 2159 · LBN 854 · Monkey Head Nebula · NGC 2174 · NGC 2175 · Sh2-252 · V2781 Ori

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Sh2-252 MonkeyHead Nebula in SHO Hubble

Powered byPixInsight

Sh2-252 MonkeyHead Nebula in SHO Hubble

Planewave CDK12.5; AP 1100GTO AE
ASI6200MM, - Antlia Pro RGB & 3.5nm NB filters
Ha/O/S: (38,33,30 x 450s exposures, Bin 1x1, Gain 200)
R,G,B: (35,27,31 x 120s, Bin 1x1, Gain 200) for stars
Total Integration Time = 15.7 hours – November 2023

I didn’t want to be brow beaten into aping the standard framing of the Monkey Head star forming region.   Instead I wanted to profile the fine details of the nebulosity, including many elephant trunks, fingers, dark nebulosity, small stellar nurseries, and possibly Herbig Haro objects, by taking advantage of the strong and distinct OIII and SII signals as well as Ha that are emitted by Sh2-252.   The target makes an excellent broadband target too, and not completely dominated by just hydrogen red.   In this image, the normal left orientation is down and the neck and occipital area are absent to help avoid chimpish associations.

Despite being a beautiful nebula in Orion, it is not associated with the Orion Giant Molecular Clouds (A & B) that are responsible for the Orion, Flame and Horsehead nebulae.   The Monkey Head nebula is actually 5 times more distant than those molecular cloud. The primary star responsible for energizing most of the Sh2-252 is HD42088 (type O star), the brightest star in the image and located roughly centrally in the image. However, there are a number of more compact cloud regions in the image, most lit up by smaller, younger type B stars.   A couple of regions without type B stars can also be seen, and these are thought to be Herbig Haro’s – the jets of material ejected by proto-stars.

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Status	Advanced success
Started	...
Astrometry.net job	8838179
PixInsight job	1T5MDX7KW1HEZF81QE11AMXUM5AIHATB
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	06h09m29s.892
RA (top/left)	06h10m36s.181
RA (top/right)	06h10m38s.960
RA (bottom/right)	06h08m23s.440
RA (bottom/left)	06h08m21s.508

Dec (center)	+20°32′19″.62
Dec (top/left)	+20°08′30″.53
Dec (top/right)	+20°55′43″.21
Dec (bottom/right)	+20°56′04″.80
Dec (bottom/left)	+20°08′54″.90

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Sh2-252 MonkeyHead Nebula in SHO Hubble

Sh2-252 MonkeyHead Nebula in SHO Hubble

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