NGC7822 - SHO with RGB Stars (Joel Shepherd)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: HD225216 · LBN 580 · LBN 581 · LBN 582 · LBN 583 · LBN 584 · LBN 586 · LBN 588 · LDN 1268 · LDN 1269 · LDN 1270 · LDN 1271 · NGC 7822 · Sh2-171

Powered byPixInsight

NGC7822 - SHO with RGB Stars

Powered byPixInsight

NGC7822 - SHO with RGB Stars

After a long break for the southwest monsoon season, I was able to start imaging again in September. This is a "detail" of NGC-7822, 2900 light-years away in Cepheus. The full nebula is probably 3x the size of what's pictured here. I learned a little something new while reading about it. The various "elephant trunk" protuberances are caused by dense clumps of cool gas protecting the gas and dust behind them from being dispersed by the stellar winds of the star powering the emissions from this nebula. That star is just off the right edge of the image, an O-class star with a surface temperature of 45,000K and several orders of magnitude more luminous than our sun.

On my next target, I'm going to experiment with shorter RGB exposures, in hopes of getting better star color and also (especially) mitigating the persistent flare I seem to be getting from my blue filter. I'm debating replacing it altogether.

The refractors!
N.I.N.A. Users
TEC140 Refractor
Narrowband imaging

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	Advanced success
Started	...
Astrometry.net job	8788292
PixInsight job	3N2FJAL3PZMUL6V96WZAF9D2UN8UMOV4
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	00h03m08s.80
RA (top/left)	00h08m28s.10
RA (top/right)	00h02m54s.37
RA (bottom/right)	23h57m45s.58
RA (bottom/left)	00h03m21s.10

Dec (center)	+67°19′35″.2
Dec (top/left)	+67°13′42″.6
Dec (top/right)	+67°51′01″.3
Dec (bottom/right)	+67°24′47″.5
Dec (bottom/left)	+66°48′09″.4

Image Index:

Contribution Index (beta):

NGC7822 - SHO with RGB Stars

NGC7822 - SHO with RGB Stars

Equipment

Acquisition details

Description

Comments

Acquired at

Sky plot

Histogram

In these public groups

Image Index:

Contribution Index (beta):

NGC7822 - SHO with RGB Stars

NGC7822 - SHO with RGB Stars

Equipment

Acquisition details

Description

Comments

Acquired at

Sky plot

Histogram

In these public groups

Notifications

AstroBin is in READ ONLY mode

Sorry :-(

Sorry :-(

Sorry :-(

Are you really sure?

Warning!

Warning!

Are you sure?

Report abuse

Slideshow settings

IOTD/TP stats (last [x] days)

Distribution of astrophotographers

Distribution of subject types

Distribution of data sources

Sorry

Sorry

Share

Upload new revision

Upload uncompressed source (XISF/FITS/PSD/TIFF)

Delete image and all its revisions?

Delete original image?

Delete all other versions?

Delete all revisions?

IOTD/TP stats

The following people like this image

The following people bookmarked this image

Warning

Flag malfunctioning thumbnails

Contains

Remove yourself as a collaborator

Plate-solving information