The Perseus Double Cluster (Tom Wildoner)

Celestial hemisphere: Northern · Constellation: Perseus (Per) · Contains: 10 Per · 7 Per) · 7 chi Per · Double cluster · HD13784 · HD13831 · HD13841 · HD13854 · HD13866 · HD13890 · HD13900 · HD13910 · HD13969 · HD13970 · HD14012 · HD14051 · HD14052 · HD14053 · HD14092 · HD14134 · HD14143 · HD14162 · HD14184 · HD14186 · HD14210 · HD14250 · HD14270 · HD14330 · HD14357 · HD14422 · And 24 more.

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The Perseus Double Cluster

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The Perseus Double Cluster

Here is a view of the famous double cluster in the constellation Perseus (between Perseus and Cassiopeia), they are also designated NGC 869 and NGC 884. Check out the red supergiants in this view! Did you know that the Perseus Double Cluster is surrounded by one of the largest concentrations of red supergiants stars in the sky? (Red supergiants, neutrinos and the Double Cluster, Tristram Brelstafff, 1996)

Observation data (J2000.0 epoch)
Constellation: Perseus
Right ascension: 2h 20m
Declination: 57° 08′
Distance: 7,460 and 7,640ly
Apparent magnitude (V): 3.7 and 3.8
Apparent dimensions (V): 60′

Tech Specs: Sky-Watcher Esprit 120ED Telescope, ZWO AS2600mc-Pro running at -10C, Celestron CGEM-DX mount, two panel mosaic each 54 x 60 second guided exposures, focused with a ZWO EAF, controlled with a ZWO ASIAir Pro. Processed using PixInsight. Image Date: October 29, 2022. Location: The Dark Side Observatory (W59), Weatherly, PA, USA (Bortle Class 4).

The refractors!
Open Star Clusters

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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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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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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	6612796
PixInsight job	70DUZHLMQJQNOJJ632TV419VMA62HT0U
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	02h20m43s.530
RA (top/left)	02h26m08s.280
RA (top/right)	02h15m24s.643
RA (bottom/right)	02h15m27s.723
RA (bottom/left)	02h25m51s.399

Dec (center)	+57°08′19″.66
Dec (top/left)	+57°41′20″.71
Dec (top/right)	+57°42′28″.66
Dec (bottom/right)	+56°34′33″.27
Dec (bottom/left)	+56°33′23″.36

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The Perseus Double Cluster

The Perseus Double Cluster

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The Perseus Double Cluster

The Perseus Double Cluster

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