NGC 4945 (Pranay Kanwar)

Celestial hemisphere: Southern · Constellation: Centaurus (Cen) · Contains: HD113484 · HD113739 · HD113767 · NGC 4945

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NGC 4945

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NGC 4945

NGC 4945 a.k.a Caldwell 83, barred spiral galaxy in Centaurus ~11.7 Mly away. One of the brightest galaxies in Centaurus A/M83 group, part of the Virgo supercluster.

Thought to be very similar to our galaxy with an unusual energetic Seyfert 2 nucleus which may host a supermassive black hole. PGC 45380 a Hubble-type SBm barred spiral galaxy ~53 Mly away can also be seen at the top right corner, looking like a star with emerging plumes.

HaLRGB image 26h 25m total, H alpha added to the red and blue channel using continuum subtraction technique. Data is from iTelescope.net and telescope.live.

iTelescope.net premium image set taken from a Planewave CDK 20" with FLI-PL09000 camera and Astrodon E-Series filters at Siding Spring Observatory Australia.
Dates unknown probably Feb-June 2022. Frames Ha 8 x 1800s, LRGB 24:12:10:9 x 900s.

telescope.live data is from CHI-1 Telescope, a Planewave CDK24 with FLI PL 9000 camera and Astrodon 2nd GEN LRGB filters, situated in the Rio Hurtado Valley, Chile. Part of the telescope.live network. Mulitple dates Jan-March 2021-22. Frames LRGB 4x6x300s, 4x10x600s.

Stacked in AstroPixelProcessor. Processed in PixInsight.

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	6056887
PixInsight job	5J5BG5D4NZZ9ZLNHI06Z4GHY74YAPU0D
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	13h05m34s.676
RA (top/left)	13h04m03s.260
RA (top/right)	13h06m55s.518
RA (bottom/right)	13h07m05s.346
RA (bottom/left)	13h04m14s.703

Dec (center)	-49°28′37″.44
Dec (top/left)	-49°42′25″.80
Dec (top/right)	-49°44′06″.73
Dec (bottom/right)	-49°14′44″.70
Dec (bottom/left)	-49°13′04″.98

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NGC 4945

NGC 4945

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NGC 4945

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