NGC 891 Needle Galaxy (Caldwell 23) (Mollenberg Observatory)

Celestial hemisphere: Northern · Constellation: Andromeda (And) · Contains: NGC 891 · NGC 898 · NGC 910

NGC 891 Needle Galaxy (Caldwell 23), Mollenberg Observatory

Powered byPixInsight

NGC 891 Needle Galaxy (Caldwell 23)

Link: https://www.instagram.com/p/CGa0FpkDZeJ/

Powered byPixInsight

NGC 891 Needle Galaxy (Caldwell 23)

Link: https://www.instagram.com/p/CGa0FpkDZeJ/

NGC 891 and Abell 347: Most prominent in this image is the spiral galaxy NGC 891 (AKA: UGC 1831, PGC 9031, Caldwell 23), 100 thousand light-years across and seen almost exactly edge-on. It was discovered by William Herschel on October 6, 1784. At about 30 million light-years distant, NGC 891 looks a lot like our own Milky Way with a flattened, thin, galactic disk. Its disk and central bulge are cut along the middle by dark, obscuring dust clouds. Scattered above and left of NGC 891 in this image are members of galaxy cluster Abell 347. Nearly 240 million light-years away, Abell 347 shows off its own large galaxies, smaller but quite beautiful when investigated closely. They are similar to NGC 891 in physical size but located almost 8 times farther away, so Abell 347 galaxies have roughly one eighth the apparent size of NGC 891, itself being approx. 13.5 x 2.5 minutes in angular size with an apparent magnitude of 10.8.

This image is the result of 90 (of 110 total) 200 second sub frames taken on the evening of October 13th 2020 and stacked with darks, flats and dark flats in AstroPixelProcessor with finishing in Photoshop. The other edits are crops from this original image and an annotated version from astrometry.net.

Cloudy Nights
Southern Hemisphere Astro
The OSC Club (One Shot Camera)

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	4854692
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

Image Index:

Contribution Index (beta):

NGC 891 Needle Galaxy (Caldwell 23)

NGC 891 Needle Galaxy (Caldwell 23)

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

In these public groups

		...
You have no new notifications.

Image Index:

Contribution Index (beta):

NGC 891 Needle Galaxy (Caldwell 23)

NGC 891 Needle Galaxy (Caldwell 23)

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