NGC 6820 / sh2-86 Nebula & Open Cluster NGC 6823 in Vulpecula (Daniel.P)

Celestial hemisphere: Northern · Constellation: Vulpecula (Vul) · Contains: HD185915 · HD344701 · HD344702 · HD344766 · HD344768 · HD344769 · HD344770 · HD344771 · HD344773 · HD344774 · HD344777 · HD344778 · HD344780 · HD344786 · HD344789 · HD344790 · HD344791 · HD344792 · HD344795 · HD344888 · HD344895 · LBN 135 · NGC 6820 · NGC 6823 · Sh2-86

NGC 6820 / sh2-86 Nebula & Open Cluster NGC 6823 in Vulpecula

Revision title: Re Processed in 2024

NGC 6820 / sh2-86 Nebula & Open Cluster NGC 6823 in Vulpecula

Revision title: Re Processed in 2024

The mouse over shows the old (2019) versus the new processing 2024 ...

The processing was performed in PI as follows :

note : star mask was created using satrnet++ applied on Lum component of RGB image

For each S, H, O, R, G, B channels :

- Images Calibration (Dark and Flat (for RGB))

- Cosmetic Correction

- Image Registration

- Image Integration

- Mure Denoise (for RGBSHO)

Then :

- Create SHO image

- Color balance on nebula and color saturation using mask to protect dark area.

- DBE using few selected points

- SCNR

- Deconvolution of SHO masked with 2.2 pixel psf

- Create RGB image and color balance and color sat

- Going NL using HT for SHO & RGB images

- Color Saturation range masked (and desaturate bkg)

- Color Saturation stars masked to desaturate stars

- Apply "a" & "b" color channels of the RGB image to the SHO image under star mask

(this is to apply natural color to the stars)

- Local Histogram Equalisation

- TGV denoise (no mask)

Final image adjustments performed in Photo on Imac :

- levels adjustments

- adjust color looking using "selective color"

- boost sharpness

- deflip

Original
B
Final
C

C

Title: Re Processed in 2024

Uploaded: ...

Sharpless2 Objects
ZWO ASI1600MM/QHY163M

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
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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	9044421
PixInsight job	WAVKHBRPJOXVSMLVP9ELKRHYZXP3AIAH
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	19h43m00s.753
RA (top/left)	19h45m35s.100
RA (top/right)	19h40m27s.242
RA (bottom/right)	19h40m27s.560
RA (bottom/left)	19h45m33s.139

Dec (center)	+23°22′20″.35
Dec (top/left)	+23°48′45″.32
Dec (top/right)	+23°48′59″.99
Dec (bottom/right)	+22°55′46″.13
Dec (bottom/left)	+22°55′32″.51

Image Index:

Contribution Index (beta):

NGC 6820 / sh2-86 Nebula & Open Cluster NGC 6823 in Vulpecula

Revision title: Re Processed in 2024

NGC 6820 / sh2-86 Nebula & Open Cluster NGC 6823 in Vulpecula

Revision title: Re Processed in 2024

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Image Index:

Contribution Index (beta):

NGC 6820 / sh2-86 Nebula & Open Cluster NGC 6823 in Vulpecula

Revision title: Re Processed in 2024

NGC 6820 / sh2-86 Nebula & Open Cluster NGC 6823 in Vulpecula

Revision title: Re Processed in 2024

Equipment

Acquisition details

Description

Comments

Revisions

C

Sky plot

Histogram

In these public groups

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