Vivid Trifid! (M20) (Menlo Astronomy)

Celestial hemisphere: Southern · Constellation: Sagittarius (Sgr) · Contains: B85 · HD164384 · HD164402 · HD164452 · HD164492 · HD164514 · HD164534 · HD164637 · HD164704 · HD164717 · HD164739 · HD164833 · HD313595 · HD313596 · HD313597 · HD313598 · HD313606 · HD313607 · HD313608 · HD313709 · HD313710 · HD313711 · HD313713 · HD313714 · HD313715 · HD313716 · HD313718 · HD313719 · HD313731 · HD313732 · And 11 more.

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Vivid Trifid! (M20)

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Vivid Trifid! (M20)

The Trifid Nebula taken by Caroline Baccus. This picture was taken at the summit of Mount Diablo, with an 8" Newtonian at a Bortle scale of 4-5.

Trifid, named for the three prominent dust lanes dividing its core, is a unique combination of emission, reflection, and dark nebulas. The relatively high-density pink areas are emission nebulae and H II regions, regions made up of atomic ionized hydrogen (hydrogen atoms stripped of their electrons, making them positively charged). The blue reflection nebulas in Trifid are caused by interstellar dust and gas reflecting starlight from nearby stars, and the dark nebulas are dust in front of the starry core, concealing its light from view. Trifid is estimated to be about 5,200 ly away, and at the relatively low magnitude value of 6.3, it makes a great astrophotography target!

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Please note: The following tables are updated every 24 hours.

Distribution of astrophotographers

This table shows the number of distinct astrophotographers who have been assigned and IOTD/TP award compared to the total number of images awarded.
	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape

Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

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	5990605
PixInsight job	D097964WU6TBTKE6G37JDCLNF2M9ER6W
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	18h02m36s.832
RA (top/left)	18h01m51s.970
RA (top/right)	18h04m26s.1000
RA (bottom/right)	18h03m22s.281
RA (bottom/left)	18h00m46s.664

Dec (center)	-22°57′56″.52
Dec (top/left)	-23°21′55″.25
Dec (top/right)	-23°04′22″.13
Dec (bottom/right)	-22°33′55″.59
Dec (bottom/left)	-22°51′24″.53

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Contribution Index (beta):

Vivid Trifid! (M20)

Vivid Trifid! (M20)

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Image Index:

Contribution Index (beta):

Vivid Trifid! (M20)

Vivid Trifid! (M20)

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Description

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