Messier 17, Omega Nebula (Susan)

Celestial hemisphere: Southern · Constellation: Sagittarius (Sgr) · Contains: Checkmark Nebula · HD168098 · HD168163 · HD168164 · HD168276 · HD168302 · HD168447 · HD168521 · HD168569 · HD168585 · HD168607 · HD168625 · HD168701 · HD168816 · HD168857 · HD168859 · HD168919 · IC 4706 · IC 4707 · LBN 60 · LDN 359 · Lobster Nebula · M 17 · NGC 6618 · Sh2-45 · Swan Nebula · omega Nebula

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Messier 17, Omega Nebula

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

Powered byPixInsight

Messier 17, Omega Nebula

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

Stellina observation: 2023-07-20, 21:59 PDT – 2023-07-21, 03:00 PDT, 1590 jpegs stacked, 1628 fits lights and 100 each darks captured. I intend to stack fits when I have at least one more night of data. PixInsight Automatic Background Extractor and Dynamic Background Extraction don’t seem to work as well on tiffs, and the APP and PixInsight stacks of fits produce better results near the edge of the field of view than the Stellina tiff does. This is especially helpful when a target nearly fills the fov. For now, I edited the first night’s tiff in PixInsight and Photoshop. I also used a touch of Blanshan’s color mask PixelMath expressions for the first time.

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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	8087988
PixInsight job	GJL7XKAA6S97TLKEG8O7WI650RTNLQVW
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	18h20m48s.100
RA (top/left)	18h22m53s.83
RA (top/right)	18h18m42s.25
RA (bottom/right)	18h18m43s.60
RA (bottom/left)	18h22m56s.10

Dec (center)	-16°10′26″.1
Dec (top/left)	-15°50′50″.1
Dec (top/right)	-15°51′33″.8
Dec (bottom/right)	-16°30′00″.5
Dec (bottom/left)	-16°29′20″.4

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Messier 17, Omega Nebula

Messier 17, Omega Nebula

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Messier 17, Omega Nebula

Messier 17, Omega Nebula

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