NGC 281 - The Pacman Nebula (Richard McInnis)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: HD5005 · IC 1590 · LBN 615 · LBN 616 · NGC 281 · Sh2-184

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NGC 281 - The Pacman Nebula

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NGC 281 - The Pacman Nebula

NGC 281 / IC 11 / Sh2-184 - The Pac-Man Nebula
This is a bright emission nebula and part of an H II region in the northern constellation of Cassiopeia and is part of the Milky Way’s Perseus Spiral Arm. Distance: ~ 9,500 light years away.

Celestron 11” Edge HD at f/7. Celestron OAG and a 174mm guide camera, CEM 70, 2600 mm pro cooled to -10 / gain 100. ASIAIR pro, 36mm EFW, EAF, 5 min subs shot with Chroma 3nm filters done in Hubble SHO palette.
40 hours total integration. September / October 2023.
Processed in Pixinsight. Shot from my backyard, bortle 8.

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	8583293
PixInsight job	ZWHXMDZ0ZFU8BBAMV5GX74X34L4WPGJU
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	00h52m49s.796
RA (top/left)	00h51m10s.726
RA (top/right)	00h51m09s.315
RA (bottom/right)	00h54m27s.523
RA (bottom/left)	00h54m31s.842

Dec (center)	+56°37′41″.20
Dec (top/left)	+56°52′05″.63
Dec (top/right)	+56°23′26″.36
Dec (bottom/right)	+56°23′06″.31
Dec (bottom/left)	+56°51′43″.14

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NGC 281 - The Pacman Nebula

NGC 281 - The Pacman Nebula

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Contribution Index (beta):

NGC 281 - The Pacman Nebula

NGC 281 - The Pacman Nebula

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Description

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