NGC 884 & NGC 869 (Daniel Nimmervoll)

Celestial hemisphere: Northern · Constellation: Perseus (Per) · Contains: 10 Per · 5 Per · 7 Per) · 7 chi Per · 8 Per · B201 · Double cluster · HD13136 · HD13149 · HD13403 · HD13841 · HD13854 · HD13866 · HD13929 · HD14013 · HD14134 · HD14143 · HD14270 · HD14330 · HD14404 · HD14433 · HD14443 · HD14469 · HD14535 · HD14542 · HD14571 · HD14871 · HD14899 · HD14956 · HD15316 · And 10 more.

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NGC 884 & NGC 869

Link: https://www.astro-fotografie.at/portfolio-view/ngc-884-und-ngc-869/

Powered byPixInsight

NGC 884 & NGC 869

Link: https://www.astro-fotografie.at/portfolio-view/ngc-884-und-ngc-869/

NGC 869 (auch bekannt als h Persei) und NGC 884 (auch bekannt als χ Persei) sind zwei offene Sternhaufen, die sich im Sternbild Perseus befinden. NGC 869 ist der westliche Teil des Doppelsternhaufens und befindet sich 7460 Lichtjahre entfernt, während NGC 884 der östliche Teil ist und 7640 Lichtjahre entfernt liegt. Beide Sternhaufen sind etwa 14 Millionen Jahre alt und gehören zur Perseus OB1-Vereinigung, die nur wenige hundert Lichtjahre voneinander entfernt ist. Diese Sternhaufen wurden erstmals von Hipparchus aufgezeichnet und sind seit der Antike bekannt.Die Doppelsternhaufen sind bei Amateur-Astronomen beliebt und werden oft mit kleinen Teleskopen beobachtet oder fotografiert. Sie sind mit bloßem Auge als heller Fleck in der winterlichen Milchstraße zwischen den Sternbildern Perseus und Kassiopeia sichtbar. In kleinen Teleskopen erscheinen die Sternhaufen als Ansammlungen von hellen Sternen in einem reichen Sternfeld. Sie sind von leuchtend blauen Sternen dominiert, beherbergen aber auch einige orangefarbene Sterne, die das visuelle Interesse erhöhen. Diese Sternhaufen bieten eine spektakuläre Ansicht bei geringer Vergrößerung und sind ein faszinierendes Ziel für Beobachtungen und Fotografien.

AUFNAHMEDATEN:

Objekte im Bild: NGC 884 · NGC 869
Aufnahmedatum: Oktober 2023
Entfernung: Ca. 7.500 Lichtjahre
Durchmesser: Jeweils ca. 35 Lichtjahre
Belichtung: RGB jeweils 35 x 150 Sek. / Gain 0 bei -15 °C

Kalibrierung: BIAS / Flats / DarkFlats
Montierung: Skywatcher EQ6-R PRO
Teleskop: 6″ Hypergraph 420mm f/2.8
Korrektor: SharpStar
Filter: Antlia LRGB-V Pro

Kamera: QHY268m
Guiding: QHY OAG mit QHY5III678M und PHD2
Software:APP / PI / Photoshop CC

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	8591630
PixInsight job	Y9LHHBUQ12F1NHGTHKATGDJDUACOI6CX
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	02h20m33s.38
RA (top/left)	02h09m55s.37
RA (top/right)	02h31m12s.56
RA (bottom/right)	02h31m48s.37
RA (bottom/left)	02h09m18s.99

Dec (center)	+57°06′10″.8
Dec (top/left)	+56°04′06″.7
Dec (top/right)	+56°04′08″.8
Dec (bottom/right)	+58°04′55″.1
Dec (bottom/left)	+58°04′45″.0

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NGC 884 & NGC 869

NGC 884 & NGC 869

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NGC 884 & NGC 869

NGC 884 & NGC 869

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