M 104 (Alpha Zhang)

Celestial hemisphere: Southern · Constellation: Virgo (Vir) · Contains: M 104 · NGC 4594 · Sombrero galaxy

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M 104

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M 104

The Sombrero Galaxy (also known as Messier Object 104, M104 or NGC 4594) is a lenticular galaxy[4] in the constellation Virgo found 9.55 Mpc (31,100,000 ly)[2] from Earth. The galaxy has a diameter of approximately 15kpc (50,000 light-years),[5] 30% the size of the Milky Way. It has a bright nucleus, an unusually large central bulge, and a prominent dust lane in its inclined disk. The dark dust lane and the bulge give this galaxy the appearance of a sombrero hat. Astronomers initially thought that the halo was small and light, indicative of a spiral galaxy, but the Spitzer Space Telescope found that the dust ring around the Sombrero Galaxy is larger and more massive than previously thought, indicative of a giant elliptical galaxy.[6] The galaxy has an apparent magnitude of +8.0,[5] making it easily visible with amateur telescopes, and it is considered by some authors to be the galaxy with the highest absolute magnitude within a radius of 10 megaparsecs of the Milky Way.[3] Its large bulge, its central supermassive black hole, and its dust lane all attract the attention of professional astronomers.

Image Telescope : AG Optical 10" iDK

Image Camera : FLI ML-8050

Mount : Sky-Watcher EQ8

Frames : L(96*600sec)/R(21*600sec)/G(26*600sec)/B(28*600sec)

Location : Lijiang , Yunnan , China

Final
Original
B

Southern Hemisphere Astro
AstroBin Platform open discussions community forum
Astronomical Society of Victoria (ASV)
China Lijiang Gemini Observatory

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	2585758
PixInsight job	XYVQRYVJMPYS6D5RMXWZFL1SZZRZ075C
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	12h40m00s.298
RA (top/left)	12h41m09s.160
RA (top/right)	12h39m50s.794
RA (bottom/right)	12h38m51s.611
RA (bottom/left)	12h40m09s.816

Dec (center)	-11°36′58″.91
Dec (top/left)	-11°39′26″.73
Dec (top/right)	-11°20′08″.90
Dec (bottom/right)	-11°34′29″.46
Dec (bottom/left)	-11°53′48″.14

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M 104

M 104

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M 104

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