THE SOMBRERO GALAXY (M104) (Drew Evans)

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

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THE SOMBRERO GALAXY (M104)

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THE SOMBRERO GALAXY (M104)

THE SOMBRERO GALAXY (M104)

The Sombrero Galaxy is a lenticular galaxy in the constellation Virgo found 30 million light years from Earth. It sits low in the southern sky in the northern hemisphere, which has always been a difficult target for me prior to moving to Arizona.

The galaxy has a diameter of approximately 30% the size of our own Milky Way Galaxy. It has a bright nucleus, an unusually large central bulge, and a prominent dark dust lanes in its slightly inclined disk.

This image was taken over the span of several evenings in April, totaling almost 15 hours of data acquisition.

OTA: Sharpstar SC260 (260mm f/5, 1300mm focal length)
Mount: iOptron CEM120
Camera: ZWO ASI2600MM Pro
Gain: 100
Cooling Temperature: -10 degrees celsius

Filters:
Chroma L⚪ 300s x 50
Chroma R🔴 300s x 40
Chroma G🟢 300s x 40
Chroma B🔵 300s x 40
14 hours total total acquisition time

Auto-guiding: ZWO ASI174MM Mini and ZWO OAG-L
Auto-focusing: ZWO EAF
Control: ZWO ASIAIR Pro

Calibrated in Astro Pixel Processor with flats, darks and dark flats. Processed in Pixinsight and Lightroom.

Location: Bortle Class 2 skies outside Flagstaff, Arizona

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	7882811
PixInsight job	VQJF42OXHQVENXVNNR8O488NGZ21I8AO
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	12h39m58s.979
RA (top/left)	12h40m34s.350
RA (top/right)	12h39m21s.465
RA (bottom/right)	12h39m23s.437
RA (bottom/left)	12h40m36s.475

Dec (center)	-11°37′27″.39
Dec (top/left)	-11°27′35″.83
Dec (top/right)	-11°28′03″.39
Dec (bottom/right)	-11°47′19″.90
Dec (bottom/left)	-11°46′51″.69

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Contribution Index (beta):

THE SOMBRERO GALAXY (M104)

THE SOMBRERO GALAXY (M104)

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Image Index:

Contribution Index (beta):

THE SOMBRERO GALAXY (M104)

THE SOMBRERO GALAXY (M104)

Equipment

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Description

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