NGC884 + NGC869 (Georg N. Nyman)

Celestial hemisphere: Northern · Constellation: Perseus (Per) · Contains: 10 Per · 5 Per · 7 Per) · 7 chi Per · 8 Per · B201 · HD13268 · HD13292 · HD13309 · HD13331 · HD13338 · HD13370 · HD13391 · HD13392 · HD13403 · HD13493 · HD13494 · HD13506 · HD13543 · HD13561 · HD13620 · HD13635 · HD13658 · HD13659 · HD13716 · HD13758 · HD13784 · HD13831 · HD13841 · HD13854 · And 97 more.

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NGC884 + NGC869

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NGC884 + NGC869

This double starcluster is very well known - already about 2000 years ago by Hipparchus, it was known but it was thought to be just two stars...anyway, it is not very far away from Earth and is situated in an ocean of Ha and dust. These clusters need quite a rather longish exposure time to get the background as well, not just the very bright stars. If one keeps exposing, after a very long time, probably some days, one can see that the custers are surrounded by a very faint network of interstellar dust trails.
The custers are located in the constellation Perseus, about 7650 ly away from us. Their age is estimated to be around 14 Mio years. Their actual distance is estimated to be a few hundred lightyears.
Most images show the custers only on a more or less dark background - but in reality, the area is full of interstellar dust and Ha emissions....one just needs to keep exposing.

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	8653549
PixInsight job	UEOGUMF2XCC1A7UI666SWHS9AZBDM3DF
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	02h20m57s.15
RA (top/left)	02h10m18s.58
RA (top/right)	02h31m33s.24
RA (bottom/right)	02h31m01s.37
RA (bottom/left)	02h10m56s.98

Dec (center)	+57°08′15″.5
Dec (top/left)	+58°09′07″.4
Dec (top/right)	+58°09′56″.4
Dec (bottom/right)	+56°04′04″.5
Dec (bottom/left)	+56°03′30″.3

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NGC884 + NGC869

NGC884 + NGC869

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NGC884 + NGC869

NGC884 + NGC869

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