DoubleCluster (Darius Kopriva)

Celestial hemisphere: Northern · Constellation: Perseus (Per) · Contains: 10 Per · 7 Per) · 7 chi Per · Double cluster · HD13784 · HD13841 · HD13854 · HD13900 · HD13910 · HD13969 · HD13970 · HD14012 · HD14026 · HD14039 · HD14051 · HD14052 · HD14053 · HD14092 · HD14093 · HD14134 · HD14143 · HD14162 · HD14184 · HD14186 · HD14210 · HD14211 · HD14250 · HD14270 · HD14289 · HD14302 · And 31 more.

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DoubleCluster

Link: https://dako-astrophotography.com/Image/fcjlsl

Powered byPixInsight

DoubleCluster

Link: https://dako-astrophotography.com/Image/fcjlsl

NGC 884 (also known as χ Persei) is an open cluster located 7640 light years away in the constellation of Perseus. It is the easternmost of the Double Cluster with NGC 869. NGC 869 and 884 are often designated h and χ Persei, respectively. The cluster is about 14 million years old. Located in the Perseus OB1 association, both clusters are located physically close to one another, only a few hundred light years apart. The clusters were first recorded by Hipparchus, thus have been known since antiquity.

The Double Cluster is a favorite of amateur astronomers. These bright clusters are often photographed or observed with small telescopes. Easy to find, the clusters are visible with the unaided eye between the constellations of Perseus and Cassiopeia as a brighter patch in the winter Milky Way. The Double Cluster was also included in the Caldwell catalogue, a catalogue of astronomical objects for amateur observation.

In small telescopes, the cluster appears as a beautiful assemblage of bright stars located in a rich star field. Dominated by bright blue stars, the cluster also hosts a few orange stars that add to the visual interest. Both clusters together offer a spectacular low-magnification view.

Southern Hemisphere Astro

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	Distinct awarded users	Total awarded images
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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
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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
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Amateur hosting facility
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Professional, scientific grade data
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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	8470194
PixInsight job	D91I3UG5FV239WTWZ4P9BWS6303W51CS
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	02h20m51s.22
RA (top/left)	02h15m03s.55
RA (top/right)	02h19m03s.91
RA (bottom/right)	02h26m27s.99
RA (bottom/left)	02h22m43s.64

Dec (center)	+57°04′55″.10
Dec (top/left)	+57°40′30″.6
Dec (top/right)	+56°07′59″.1
Dec (bottom/right)	+56°28′28″.1
Dec (bottom/left)	+58°01′49″.5

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DoubleCluster

DoubleCluster

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DoubleCluster

DoubleCluster

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