Messier 3 (Hartmut Schulze)

Celestial hemisphere: Northern · Constellation: Canes Venatici (CVn) · Contains: M 3 · NGC 5263 · NGC 5272

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Messier 3

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

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Messier 3

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

M 3 oder NGC 5272 im Sternbild Canes venatici. Dieser 1764 von Ch. Messier entdeckte Kugelsternhaufen ist mit mag 6,3 , einer Ausdehnung von 18 Bogenminuten und etwa 500.000 Sternen sicher einer der schönsten Kugelsternhaufen. Er kommt natürlich nicht an Omega Centauri heran, den es ja aber nur auf der Südhalbkugel zu bestaunen gibt. Gegenüber dem sonst viel häufiger dargestellten M13 hat er den Vorteil, daß die Sterne nicht ganz so dicht zu stehen scheinen. Das dichte Zentrum der Kugelsternhaufen ist bei der Bildbearbeitung ja immer schwierig. Hier hat mit in Pixinsight das HDRMuliscale Transformation Tool tolle Dienste geleistet. Anwendung mit 4 Ebenen- ein Click und das Zentrum erschien ziemlich aufgelöst. Ein Blick auf das Hubble-Bild zeigt natürlich, daß man mit einem 10Zoll f4 Newton weit enfernt ist von echter Auflösung des Zentrums.

M 3 or NGC 5272 in the constellation Canes venatici. This globular cluster, discovered by Ch. Messier in 1764, is one of the most beautiful globular clusters with a mag 6.3, an extension of 18 arc minutes and around 500,000 stars. Of course, it does not come close to Omega Centauri, which can only be admired in the southern hemisphere. Compared to the M13, which is shown much more often, it has the advantage that the stars do not seem to be quite as close together. The dense center of the globular clusters is always difficult when editing images. The HDRMuliscale Transformation Tool did a great job with this in Pixinsight. Application with 4 levels - one click and the center appeared to be fairly resolved. A look at the Hubble picture shows, of course, that with a 10 inch f4 Newton you are far away from the real resolution of the center.

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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
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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
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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	3592793
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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