NGC891 (Almos Balasi)

Celestial hemisphere: Northern · Constellation: Andromeda (And) · Contains: NGC 891 · NGC 898 · PGC 2189635 · PGC 2190563 · PGC 2190710 · PGC 2191336 · PGC 2191363 · PGC 2192261 · PGC 2192495 · PGC 2193819 · PGC 2194478 · PGC 2199276 · PGC 2202439 · PGC 2203419 · PGC 2204166 · PGC 2204405 · PGC 2204461 · PGC 2204848 · PGC 2204898 · PGC 2204990 · PGC 9042 · PGC 9101

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NGC891

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NGC891

NGC 891 (also known as Caldwell 23, the Silver Sliver Galaxy, and the Outer Limits Galaxy) is an edge-on unbarred spiral galaxy about 30 million light-years away in the constellation Andromeda. It was discovered by William Herschel on October 6, 1784. The galaxy is a member of the NGC 1023 group of galaxies in the Local Supercluster. It has an H II nucleus.

Original
B
C
Final
D

B

Description: Added 20x120s and reprocessed

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C

Description: Reprocessed

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CMOS Imagers
ASI 071 mcc
Schmidt-Cassegrain Telescope (SCT) Imagers
N.I.N.A. Users
Gothard Group (Magyarok/Hungarians)
ZWO ASIAIR PRO USERS
The OSC Club (One Shot Camera)
Images from the EdgeHD Series

Galaxies

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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	7337851
PixInsight job	E6484D5HJDALHQMPQKJY88TKYIMT132X
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	02h22m38s.543
RA (top/left)	02h21m21s.813
RA (top/right)	02h21m07s.470
RA (bottom/right)	02h23m54s.301
RA (bottom/left)	02h24m11s.300

Dec (center)	+42°20′32″.26
Dec (top/left)	+42°45′30″.35
Dec (top/right)	+41°57′24″.82
Dec (bottom/right)	+41°55′27″.36
Dec (bottom/left)	+42°43′35″.25

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Contribution Index (beta):

NGC891

NGC891

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Image Index:

Contribution Index (beta):

NGC891

NGC891

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Description

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C

Sky plot

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