NGC 281 - Pacman Nebula in Cassiopeia (Elisabeth Milne)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: NGC 281

Powered byPixInsight

NGC 281 - Pacman Nebula in Cassiopeia

Link: https://stevemilne.smugmug.com/Photos/Sky/Nebulae/i-fSqQMCn

Powered byPixInsight

NGC 281 - Pacman Nebula in Cassiopeia

Link: https://stevemilne.smugmug.com/Photos/Sky/Nebulae/i-fSqQMCn

NGC 281 (the Pacman Nebula) is an 80 light-year diameter dust cloud some 10,000 light years away in the constellation of Cassiopeia. The nebula was discovered by EE Barnard in August 1883.

Contained within the cloud is the open cluster IC 1590.

NGC 281 contains a number of dark globules within which (it is believed) new stars are forming. These are named Bok Globules after the Dutch-American astronomer – Bart Bok who first described these in the 1940s.

NGC 281 was photographed from our home observatory in the UK between 6 and 25 September 2016. Steve has previously presented his version, but this is my first attempt at producing a ‘Hubble Palette’ version with the data.

Capture details:

Telescope: Skywatcher Esprit 120

Camera: QSI 690

Filters: Astrodon 3nm NB

Mount: Mesu 200

Ha: 15 x 1200s

OIII: 15 x 1200s

SII: 15 x 1200s

A total of 15 hours exposure.

Women Astrophotographers

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	Basic success
Started	...
Astrometry.net job	2590378
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

Image Index:

Contribution Index (beta):

NGC 281 - Pacman Nebula in Cassiopeia

NGC 281 - Pacman Nebula in Cassiopeia

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

In these public groups

Image Index:

Contribution Index (beta):

NGC 281 - Pacman Nebula in Cassiopeia

NGC 281 - Pacman Nebula in Cassiopeia

Equipment

Acquisition details

Description

Comments

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