NGC 6888 (Gary Opitz)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: Crescent nebula · NGC 6888

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NGC 6888

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NGC 6888

My first ever image of this nebula. I used two narrowband filters for acquisition - Ha and OIII for a bi-color rendition processed using the HOO method.

The nebula is 5,000 light years distant and is 16 by 25 light years in diameter. It is illuminated by a central Wolf-Rayet star. It is located in a very star congested region of the Milky Way with much background hydrogen gas.

Original
B
Final
C

B

Description: In this revision, I have performed the SCNR process of PixInsight to remove the green bias that gives the OIII a teal color cast and allows the "true"blue of the OIII to be seen. I know color is very subjective. I like both renditions myself.

Uploaded: ...

C

Description: OK, I backed off the SCNR by 50%. This I think offers a nice compromise opposed to removing every bit of green bias. Again, very subtle and very subjective.

Uploaded: ...

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	Distinct awarded users	Total awarded images
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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
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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
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Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
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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	2782887
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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NGC 6888

NGC 6888

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Image Index:

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NGC 6888

NGC 6888

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Acquisition details

Description

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C

Sky plot

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