M20 "The Trifid Nebula" in HOO (Steve Argereow)

Celestial hemisphere: Southern · Constellation: Sagittarius (Sgr) · Contains: 13.96 · 431 Nephele · B85 · HD164225 · HD164294 · HD164384 · HD164402 · HD164452 · HD164492 · HD164514 · HD164534 · HD164637 · HD164704 · HD164717 · HD164718 · HD164739 · HD164766 · HD164767 · HD313583 · HD313584 · HD313585 · HD313595 · HD313596 · HD313597 · HD313598 · HD313606 · HD313607 · HD313608 · HD313707 · HD313708 · And 23 more.

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M20 "The Trifid Nebula" in HOO

Powered byPixInsight

M20 "The Trifid Nebula" in HOO

ASTROBIN DATA

Information Credits: HomeFreeStarCharts.com

This remarkable object not only contains an emission and
reflection nebula but also a dark nebula and an embedded open cluster.
M20 is located 5,200 light-years from Earth and has a spatial diameter of 42 light-years.
The dark nebula that gives the Trifid its appearance was cataloged by E. E. Barnard
as Barnard 85 (B85) and in 2005 the Spitzer Space Telescope discovered 30
embryonic stars and 120 newborn stars, which had not been seen in visible light images.

Information Credits: Homefreestarcharts.com

Telescope: Explorer Scientific 127mm CF APO Refractor f/7.5 (952mm Focal Length)

Mount IOptron CEM40
Camera ZWOASI1600MM-Pro Temp -15C, Binning 1 x 1, Gain 139 Offset 21
ZWO bEFW

48 X 180 Second Exposures W/ZWO Ha Filter (7nm)
57 X 180 Second Exposures W/Astrodon OIII Filter (3nm)
20 Dark Frames/50 Flats
Total Integration Time: 5vHours 15 Minutes

Acquisition with SharpCap
Stacked with Astro Pixel Processor
Guiding PHD2
Processed with Pixensight
Photo taken from Seven Lakes, NC Bortle 4.5

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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.
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected.
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	8501541
PixInsight job	3F9HSABQ8HX5P360L1XIBC1IPWHIBSGQ
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	18h02m30s.388
RA (top/left)	18h04m02s.196
RA (top/right)	18h03m51s.423
RA (bottom/right)	18h00m59s.142
RA (bottom/left)	18h01m08s.820

Dec (center)	-23°01′01″.13
Dec (top/left)	-23°27′13″.65
Dec (top/right)	-22°32′59″.99
Dec (bottom/right)	-22°34′44″.20
Dec (bottom/left)	-23°28′58″.95

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M20 "The Trifid Nebula" in HOO

M20 "The Trifid Nebula" in HOO

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M20 "The Trifid Nebula" in HOO

M20 "The Trifid Nebula" in HOO

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