NGC 2174 Monkey Head Nebula (Aaron Freimark)

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

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NGC 2174 Monkey Head Nebula

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NGC 2174 Monkey Head Nebula

This is NGC 2174, known for some reason as the "Monkey Head Nebula." Don't ask me why. The nebula is in Orion and, while dim, appears about as large as the full moon.

Captured during our clear skies Monday night, from my driveway.

1. WeightedBatchProcessing, Subframe Selector, Star Alignment, Local Normalization, Image Integration, Drizzle Integration, Dynamic Crop

2. Dynamic Background Extraction

3. EZ Denoise

4. Arcsinhstretch

5. EZ Star Reduction on SII and OIII to try to eyeball stars the same size as the other filters

6. PixelMath to create RGB: R: 0.75*SII+0.25*Ha ; G: OIII ; B: 0.1*Ha+0.9*OIII

7. LRGBCombination to apply Ha as Luminance

8. Make a good mask: Extract Wavelet Layers to create a residual layer. Convert Residual to Grayscale, then use Histogram Transformation to boost contrast, and finally ClooneStamp to clean up

9. Curves Transformation using residual mask

10. Unsharp Mask using residual mask

11. Topaz DeNoise AI

Mid-Hudson Astronomical Association (MHAA)
Northeast Imagers
INDI Users

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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	4153560
PixInsight job	Y8CTU2U7W6GAUZ94O49WPCEVBDOTJDYI
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	06h09m47s.54
RA (top/left)	06h11m54s.87
RA (top/right)	06h12m10s.37
RA (bottom/right)	06h07m39s.14
RA (bottom/left)	06h07m26s.70

Dec (center)	+20°34′38″.5
Dec (top/left)	+19°50′55″.2
Dec (top/right)	+21°15′44″.9
Dec (bottom/right)	+21°18′20″.7
Dec (bottom/left)	+19°53′29″.5

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NGC 2174 Monkey Head Nebula

NGC 2174 Monkey Head Nebula

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NGC 2174 Monkey Head Nebula

NGC 2174 Monkey Head Nebula

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