IC1805 Melotte15 (Andreas GL.)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: IC 1805

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IC1805 Melotte15

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IC1805 Melotte15

IC1805 Melotte15

Der offene Sternhaufen trägt u. a. die Bezeichnungen "Melotte 15" und IC 1805. Letztere wird manchmal auch für das ganze Gebilde benutzt.
Das Objekt befindet sich etwa 7500 Lichtjahre von der Erde entfernt im Perseus-Arm der Milchstraße. Der Emissionsnebel aus Gaswolken und dunklen Staubbereichen besteht aus Plasma von ionisiertem Wasserstoff und freien Elektronen.
Die rötlichen, nebeligen Partien werden von den Sternen des offenen Sternhaufens beleuchtet. Diese Gruppe besteht aus mehreren Sternen mit insgesamt etwa 50-facher Masse der Sonne und weiteren kleineren und weniger hellen Sternen. Der Haufen schloss einen Mikroquasar ein, welcher vor Millionen von Jahren ausgestoßen wurde.

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IC1805 Melotte15

The open star cluster carries, among other things: the names "Melotte 15" and IC 1805. The latter is sometimes used for the entire structure.
The object is located about 7,500 light-years from Earth in the Perseus Arm of the Milky Way. The emission nebula of gas clouds and dark dust areas consists of plasma of ionized hydrogen and free electrons.
The reddish, foggy areas are illuminated by the stars of the open cluster. This group consists of several stars with a total mass of around 50 times the mass of the Sun and other smaller and less bright stars. The cluster included a microquasar that was ejected millions of years ago.

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	Distinct awarded users	Total awarded images
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	Image of the day	Top pick	Top pick nominations	Total submitted
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	Image of the day	Top pick	Top pick nominations	Total submitted
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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.

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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.
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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	8796256
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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IC1805 Melotte15

IC1805 Melotte15

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