M20 The Triffid (Larry S)

Celestial hemisphere: Southern · Constellation: Sagittarius (Sgr) · Contains: B85 · M 20 · M 21 · NGC 6514 · NGC 6531 · PK006+00.1 · Sh2-30 · Trifid Nebula

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M20 The Triffid

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M20 The Triffid

M20 Triffid nebula in Sagittarius. About 5200 light years away, about 10 across. Only about 300,000 years old, one of the youngest emission nebulae known. Rather a difficult target for me, low to southern horizon, not far from city light pollution dome, short capture window between trees, and other obstructions.

Initially, I tried combining RGB and HOO using PixInsight NBRGBCombination script. However the high HA/Red spectrum content of this object caused washing out and and oversaturation. So I tried using the HOO as the base image, then custom blending in the RGB data. I believe the results are much improved. The colors enhance rather than distract from the structural details.

I hope you approve...

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Final
C

C

Description: Re-processed for more natural color.

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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	4717439
PixInsight job	UH0HVAA50NGL7JHU6E1GYUQK8CFF6S9E
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	18h02m30s.59
RA (top/left)	18h05m37s.92
RA (top/right)	17h59m18s.89
RA (bottom/right)	17h59m21s.62
RA (bottom/left)	18h05m43s.64

Dec (center)	-22°52′36″.9
Dec (top/left)	-22°22′15″.6
Dec (top/right)	-22°23′42″.5
Dec (bottom/right)	-23°22′42″.6
Dec (bottom/left)	-23°21′18″.3

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M20 The Triffid

M20 The Triffid

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M20 The Triffid

M20 The Triffid

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