Crescent Nebula in HOO (JDJ)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: 28 b02 Cyg · 29 b03 Cyg · Crescent nebula · IC 4996 · NGC 6881 · NGC 6888 · PK074+01.1 · PK074+02.1 · Sh2-105 · The star 28Cyg · The star 29Cyg

Powered byPixInsight

Crescent Nebula in HOO

Powered byPixInsight

Crescent Nebula in HOO

Last stop on my fall tour of the Cygnus region was the Crescent Nebula (NGC6668). This image is the HOO bicolor version created using images taken through an L-Enhance dual narrowband filter.

Imaged with WO GT81 at F4.7 (382 mm focal length) using Flat6A II field flattener/0.8x reducer, Optolong L-Enhance dual narrowband filter, and full spectrum modified Nikon D5300.

Pre-processed using PixInsight Batch Pre-Processing (BPP) script. Images calibrated using darks, bias, and flats. Extracted red/green/blue channels using BatchChannelExtraction script. R and G+B channels registered and stacked using StarAlighment and Integration. Total integration time of ~6 hours using 60 subs at ISO400x360 sec. R and G+B channels individually post-processed in Pixinsight: Cropped, gradient removal with ABE, MLT for noise reduction, stretched using masked stretch, Curves Transformation, TGVDenoise for noise reduction, HDR transform, Local histogram transform, morphological transform to shrink stars. HOO image generated using SHO-AIP script.

The refractors!
Cloudy Nights
DSLR narrowband
Suburban Astrophotography
The OSC Club (One Shot Camera)

Cygnus Region

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	3071719
PixInsight job	C54LOPLZKFUV3ZDC3ZP8DH8L7BFGBDD9
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	20h11m59s.99
RA (top/left)	20h17m41s.34
RA (top/right)	20h16m42s.12
RA (bottom/right)	20h06m02s.23
RA (bottom/left)	20h07m29s.46

Dec (center)	+38°18′51″.4
Dec (top/left)	+36°48′06″.9
Dec (top/right)	+39°58′10″.9
Dec (bottom/right)	+39°48′39″.6
Dec (bottom/left)	+36°39′03″.2

Image Index:

Contribution Index (beta):

Crescent Nebula in HOO

Crescent Nebula in HOO

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

In these public groups

In these collections

		...
You have no new notifications.

Image Index:

Contribution Index (beta):

Crescent Nebula in HOO

Crescent Nebula in HOO

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

In these public groups

In these collections

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