ngc 2174 - 559 60 secs unguided subs in 2 nights (Stefano Ciapetti)

Celestial hemisphere: Northern · Constellation: Orion (Ori) · Contains: 62 chi02 Ori · 64 Ori · 68 Ori · 71 Ori · B227 · IC 2159 · LBN 843 · LBN 854 · LDN 1570 · Monkey Head Nebula · NGC 2174 · NGC 2175 · Sh2-247 · Sh2-252 · The star 64Ori · The star 68Ori · The star 71Ori · The star χ2Ori

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ngc 2174 - 559 60 secs unguided subs in 2 nights

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ngc 2174 - 559 60 secs unguided subs in 2 nights

This image is the sum of 559 60 secs unguided subs taken during the nights of 23rd and 24th of January 2022 from my bortle 8 home terrace. Imaging train was Canon 70-200 F4 lens - used at 200 F4 FL - Asi533 - Ioptron Smart Eq pro mount - Optolong l-extreme filter. Aquisition with Astroart 8 , stacking with DSS and processing with Astroart 8 - crop, gradient removal, deconvultion, stretch.
Original subs were much more. By mistake I have delete over 400 subs taken during the night of 23rd, and they cannot be recover. So subs were 440 for the 24th and only 119 for the 23rd. That's life.

NGC 2174 (also known as Monkey Head Nebula) is an H II emission nebula located in the constellation Orion and is associated with the open star cluster NGC 2175. It is thought to be located about 6,400 light-years away from Earth. The nebula may have formed through hierarchical collapse.

There is some equivocation in the use of the identifiers NGC 2174 and NGC 2175. These may apply to the entire nebula, to its brightest knot, or to the star cluster it includes. Burnham's Celestial Handbook lists the entire nebula as 2174/2175 and does not mention the star cluster. The NGC Project (working from the original descriptive notes) assigns NGC 2174 to the prominent knot at J2000 06h 09m 23.7s, +20° 39′ 34″ and NGC 2175 to the entire nebula, and by extension to the star cluster. Simbad uses NGC 2174 for the nebula and NGC 2175 for the star cluster. (Wikipedia)

ASI533MC Pro
Imagers of Italy
Camera Lens Astrophotography
Short exposures DSO
Suburban Astrophotography

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Status	Advanced success
Started	...
Astrometry.net job	5432549
PixInsight job	ILSKGVRQWTAZMOYL65ZQPIVUPNMBZW75
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	06h09m53s.53
RA (top/left)	06h16m33s.68
RA (top/right)	06h02m34s.60
RA (bottom/right)	06h03m04s.97
RA (bottom/left)	06h17m21s.32

Dec (center)	+20°27′45″.8
Dec (top/left)	+18°55′06″.1
Dec (top/right)	+19°05′36″.4
Dec (bottom/right)	+21°59′33″.8
Dec (bottom/left)	+21°49′19″.0

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ngc 2174 - 559 60 secs unguided subs in 2 nights

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