Virgo Galaxy Cluster (Thorsten Glebe)

Celestial hemisphere: Northern · Constellation: Virgo (Vir) · Contains: M 100 · M 84 · M 86 · M 87 · M 88 · M 89 · M 90 · NGC 4321 · NGC 4374 · NGC 4406 · NGC 4438 · NGC 4486 · NGC 4501 · NGC 4552 · NGC 4569 · Virgo Galaxy

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Virgo Galaxy Cluster

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Virgo Galaxy Cluster

A remake of the Markarian's Chain, with OSC data only. This image utilizes almost the full FOV provided by the RedCat telescope and requires the camera tilt to be eliminated properly (which is not the case for the full data set, unfortunately).

I saw some discussions wondering why the camera tilt adapter which comes with the RedCat 51 scope has 4 adjustment screws instead of the usual 3 screws. I found this very handy, the Petzval design allows to choose the backfocus such that the corners of the sensor line up with the tilt adjustment screws. Then it is very easy to work out the tilt for each of the corners individually.

IOptron CEM
William Optics CAT Series
The OSC Club (One Shot Camera)
WO Redcat 51 Group
PixInsight Addicts
ZWO ASIAIR PRO USERS

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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	Basic success
Started	...
Astrometry.net job	5702834
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Virgo Galaxy Cluster

Virgo Galaxy Cluster

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Image Index:

Contribution Index (beta):

Virgo Galaxy Cluster

Virgo Galaxy Cluster

Equipment

Acquisition details

Description

Comments

Sky plot

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In these public groups

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