Veil Nebula Complex (David McClain)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: Filamentary nebula · IC 1340 · Lace-work nebula · NGC 6960 · NGC 6992 · NGC 6995 · Network nebula · The star 52Cyg · Veil nebula

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Veil Nebula Complex

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Veil Nebula Complex

A mosaic of 3 panels, all processed the same way as my exploratory super-pixel deBayering shown in the previous Veil Neb image set.

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Rev B:

Get rid of image edge artifacts. I found that using a 4th order additive sky gradient removal works much better than a linear gradient. There are physical reasons for this to be the case. And during processing it was proved correct during the masked stretch...

... previously, when I assumed a linear additive sky gradient, the result of a stretch showed corner nonuniformities. Those are now absent with the assumption of a quartic additive sky gradient.

The resulting mosaic looks a bit more uniform and continuous, blending from frame to frame. The remaining, what appear to be edge brightness in some frames, is likely due to actual cosmic sky brightness in that region.

(... or, perhaps I'm mistaken...)

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Rev C: More uniform treatment of background and nonlinear stretching range. All component frames properly normalized for exposure duration. So this version properly shows the relative brightness of the nebular components, and diminishes the broad background variations due to processing noise.

Original
B
Final
C

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	Basic success
Started	...
Astrometry.net job	1291269
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Veil Nebula Complex

Veil Nebula Complex

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Image Index:

Contribution Index (beta):

Veil Nebula Complex

Veil Nebula Complex

Equipment

Acquisition details

Description

Comments

Revisions

Sky plot

Histogram

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