NGC 891 (Stan McQueen)

Celestial hemisphere: Northern · Constellation: Andromeda (And) · Contains: NGC 891

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NGC 891

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NGC 891

NGC 891 is a spiral galaxy seen almost exactly edge-on. It is about 30 million light-years distant, in the constellation Andromeda. Discovered by William Herschel in 1784, it is a member of the NGC 1023 group of galaxies in the Local Supercluster. (Hard to think of 30 million light-years as being "local" but when you're talking astronomical distances, it is!) NGC 891 looks the way our own galaxy would look if we could view it edge-on. The dark streak running from end to end is dust that obscures the galaxy's center in the same way our view of the Milky Way galaxy's center is obscured.

This image represents about 2 hours of imaging time, spread over 3 nights. Four filters were used: Red, Green, Blue, and Clear. The images were taken at the Cascade Mountain Observatory (aka, my backyard) at Orem, Utah, using a WilliamOptics FLT110 telescope and an Orion Deep Space Imager III Monochrome CCD camera, guided with an Orion short-tube 80 telescope equipped with an Orion SteadyStar Autoguider. Images processed, aligned, and composited in MaximDL with final adjustments and enhancements in Photoshop.

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	6509552
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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NGC 891

NGC 891

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Image Index:

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NGC 891

NGC 891

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