NGC7023 (vdB139) - RGB (Jan Bielański)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: HD200099 · HD200775 · Iris Nebula · LBN 475 · LBN 483 · LBN 487 · LDN 1167 · LDN 1168 · LDN 1170 · LDN 1171 · LDN 1172 · LDN 1173 · LDN 1174 · NGC 7023 · PGC 2730428 · PGC 2817439 · PGC 65642 · PGC 66063 · T Cep

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NGC7023 (vdB139) - RGB

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NGC7023 (vdB139) - RGB

This is my first approach to Iris nebula with telescope TeleVue NP127is and 50.4mm filters, earlier image had taken with 2" filters.
I was collecting data with three filters R,G and B and from collected data I generated L image as a sum of RGB stacks.

Iris Nebula know as NGC7023, Caldwell 4 and vdB139 is a part of larger structure know as LBN487.
Object has been discovered by William Herschel on 18 October 1794. The brighter part of object shine
with the light coming from blue SAO 19158 star. The light from star is being reflected on dust particles.

Original
D
F
Final
H

D

Description: Different approach to processing, used new version of StarXTerminator and a lot of work on inverted image. More work with colors - dust clouds in this version will be more smooth and transient.

Uploaded: ...

F

Description: Another changes in color balance.

Uploaded: ...

H

Description: Blur on image corrected using BlurXTerminator + small corrections.

Uploaded: ...

Poland

NGC7023 and VdB141

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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
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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
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	6285441
PixInsight job	5IQD7JP8AQV08JN2D8UDRSIZE5EH9POP
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	21h01m33s.17
RA (top/left)	20h51m25s.78
RA (top/right)	20h51m18s.20
RA (bottom/right)	21h10m26s.97
RA (bottom/left)	21h13m09s.42

Dec (center)	+68°10′11″.9
Dec (top/left)	+69°38′41″.3
Dec (top/right)	+66°44′29″.7
Dec (bottom/right)	+66°39′43″.5
Dec (bottom/left)	+69°33′19″.4

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Contribution Index (beta):

NGC7023 (vdB139) - RGB

NGC7023 (vdB139) - RGB

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Image Index:

Contribution Index (beta):

NGC7023 (vdB139) - RGB

NGC7023 (vdB139) - RGB

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