NGC 2174 - Monkeyhead Nebula (nazarine)

Celestial hemisphere: Northern · Constellation: Orion (Ori) · Contains: IC 2159 · Monkey Head Nebula · NGC 2174 · NGC 2175 · Sh2-252

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NGC 2174 - Monkeyhead Nebula

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NGC 2174 - Monkeyhead Nebula

Monkeyhead Nebula

I used the latest version of the WBPP (2.02) on pixinsight to produce the linear image - and it did a pretty good job.

Was very cold this night

Processing:

as there was no moon i was able to forgo any background extraction as it did not seem to add any value.

played around with SCNR on the non-linear image which did do wonders for the background

overall flow (after stacking and crop)

Channel Extract / Linear Fit / Combine

Photometric Colour Calibration

Multiscale Linear Transform (Luminance)

Multiscale Linear Transform (Chrominance)

Masked Stretch (did a better job than my manual stretch - i always try both)

Used SCNR to remove green

Masked everything out except nebula using Starnet / Range Mask / pixelmath to raise Saturation a little

Performed HDR Multiscale Transform on Nebula (avoided the stars and background using masks as best as possible)

Another slight raising of Saturation

Slight Star Reduction

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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.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
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Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Advanced success
Started	...
Astrometry.net job	4226897
PixInsight job	22FZ2X9DO44HXWNZ74FMTAPIO9KZ37EO
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	06h09m49s.23
RA (top/left)	06h09m58s.11
RA (top/right)	06h12m22s.81
RA (bottom/right)	06h09m40s.24
RA (bottom/left)	06h07m16s.25

Dec (center)	+20°29′26″.4
Dec (top/left)	+19°48′06″.5
Dec (top/right)	+20°49′59″.5
Dec (bottom/right)	+21°10′45″.8
Dec (bottom/left)	+20°08′46″.2

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NGC 2174 - Monkeyhead Nebula

NGC 2174 - Monkeyhead Nebula

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NGC 2174 - Monkeyhead Nebula

NGC 2174 - Monkeyhead Nebula

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