Double Cluster (Valerio Avitabile)

Celestial hemisphere: Northern · Constellation: Perseus (Per) · Contains: 7 chi Per · Double cluster · Misam · NGC 869 · NGC 884 · The star 7Per · chi Persei Cluster · h Persei Cluster

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Double Cluster

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Double Cluster

And also this year, inevitable, the time has come to immortalize one of the most beautiful stellar objects in the entire celestial vault: the double cluster of Perseus, a brilliant open cluster visible in the constellation of the same name, composed of 2 groups of stars (NGC 869 , NGC 884) located about 7000 light years from us and discovered by the astronomer and mathematician Hipparchus in 130 BC

Both clusters are located in the Arm of Perseus, the spiral arm of the Milky Way immediately outermost compared to ours, the Arm of Orion. However, the prospect is misleading as the two clusters are about 800 light years apart. The variety of spectral class of the stars that compose it make it one of the most colorful and popular open clusters by amateur astronomers.

Being in a circumpolar sky area, in the Northern hemisphere, it is practically observable throughout the year.

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	4184630
PixInsight job	7ZDQLXWG0I2317V25FNTWTR1GC9FSPBU
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	02h20m49s.38
RA (top/left)	02h25m17s.99
RA (top/right)	02h16m13s.99
RA (bottom/right)	02h16m26s.78
RA (bottom/left)	02h25m17s.12

Dec (center)	+57°08′32″.7
Dec (top/left)	+57°36′24″.4
Dec (top/right)	+57°35′21″.0
Dec (bottom/right)	+56°40′04″.2
Dec (bottom/left)	+56°41′12″.8

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Double Cluster

Double Cluster

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Image Index:

Contribution Index (beta):

Double Cluster

Double Cluster

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Acquisition details

Description

Comments

Sky plot

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