M42 Ha 29 min (Andreas Zeinert)

Celestial hemisphere: Southern · Constellation: Orion (Ori) · Contains: 41 Ori A) · 41 Ori C · 41 Ori D · 41 the01 Ori · 42 Ori) · 42 c Ori · 43 Ori) · 43 the02 Ori · 44 Ori) · 44 iot Ori · 45 Ori · Great Orion Nebula · HD36606 · HD36655 · HD36671 · HD36782 · HD36843 · HD36917 · HD36918 · HD36938 · HD36958 · HD36959 · HD36960 · HD36981 · HD36982 · HD36999 · HD37000 · HD37025 · HD37042 · HD37058 · And 34 more.

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M42 Ha 29 min

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M42 Ha 29 min

M42 is a fascinating region exhibiting massive star formation. It's radius is about 12 light years, providing an apparent diameter of 1° equal to twice the apparent Moon diameter. It has a mass of about 2,000 times that of the Sun and if you are not impressed by this figure I don't know what can impress you.

It has been photographed for the first time in 1880 by Henry Draper.

These are old data from 2017, never processed before. The night was quite humid, the OIII signal a mess, with Hatysa provoking a massive super halo. I finally decided to just publish the Ha layer which is quite impressive. Usually this nebula is better imaged by LRGB as the dusty regions around the core have more BB signal than NB. So this is not a top pick but maybe the top of the bottom picks

. At least I did not saturate the core

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Status	Advanced success
Started	...
Astrometry.net job	7080910
PixInsight job	5KRL8DLAPE5RS4LYJ55455RTKU6WBJ39
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	05h35m19s.60
RA (top/left)	05h38m13s.65
RA (top/right)	05h37m58s.60
RA (bottom/right)	05h32m26s.60
RA (bottom/left)	05h32m40s.29

Dec (center)	-05°23′36″.7
Dec (top/left)	-06°09′04″.2
Dec (top/right)	-04°34′53″.6
Dec (bottom/right)	-04°38′06″.0
Dec (bottom/left)	-06°12′16″.0

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M42 Ha 29 min

M42 Ha 29 min

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M42 Ha 29 min

M42 Ha 29 min

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