Dark Nebula - LDN 881 (Barry Schellenberg)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: HD193063 · HD193182 · HD193247 · HD193324 · HD193367 · HD193702 · HD193839 · HD228834 · HD228852 · HD228960 · LDN 881 · LDN 882 · LDN 883 · LDN 886 · PK077+02.1

Powered byPixInsight

Dark Nebula - LDN 881

Powered byPixInsight

Dark Nebula - LDN 881

Optics: Astro-Physics 305mm F/3.8 Riccardi-Honders Astrograph
Mount: Paramount ME using The SkyX Pro
Camera: FLI ML16200
Filters: Chroma 50mm: Ha 3nm, OIII 3nm, SII 3nm
Exposure: 1840 Mins or 30 2/3 hours, [51x 1200s Ha, 20x 1200s OIII, 21x 1200s SII], Binned 1x1
Accessories: Auto guided with SXAO & Starlight Xpress Lodestar. FLI Atlas focuser using FMv5. AAG CW
Location: Southern, IN
Date: Taken over several nights from August 28th to September 30th, 2023
Notes: Image acquisition with TSXPro using MaxPilote automation software.

All Processing completed using PixInsight using the following steps:

Blink/WBPP/Pixinsight Gradient Correction/BlurXT/NoiseXT/StarXT/GHS/RGB Color combine using Channel Combination/SHO normalization/ SNCR/Saturation/Jurgen's Toolbox Selective Color Correction to tweak the final color revision

Separate Lum layer created from Ha channel and separate processing from that outlined above: BlurXT/NoiseXT/StarXT/GHS/Mask/LHE/MLT

LRGB combination/Histogram Transformation/HDR Multiscale Transformation

Created RGB stars using PixelMath & SPCC. Next BlurXT/NoiseXT/StarXT/STF & HistogramTransformation

Add stars back using PixelMath, then Crop/Annotate

Calibrated w/30 Darks, 100 Bias, 20 Flats of each filter using sky flats. CCD temperature was -20C. Image was taken from my backyard Observatory.

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	9614944
PixInsight job	R57PGYPWDZS0X1RQNMZL4FPSOTD0U5M0
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	20h18m34s.61
RA (top/left)	20h16m03s.22
RA (top/right)	20h21m09s.93
RA (bottom/right)	20h21m07s.93
RA (bottom/left)	20h15m57s.38

Dec (center)	+39°48′17″.6
Dec (top/left)	+39°22′46″.3
Dec (top/right)	+39°23′38″.9
Dec (bottom/right)	+40°13′32″.1
Dec (bottom/left)	+40°12′43″.3

Image Index:

Contribution Index (beta):

Dark Nebula - LDN 881

Dark Nebula - LDN 881

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

		...
You have no new notifications.

Image Index:

Contribution Index (beta):

Dark Nebula - LDN 881

Dark Nebula - LDN 881

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

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