Abell 39 (Bernard DELATTRE)

Celestial hemisphere: Northern · Constellation: Hercules (Her) · Contains: PK047+42.1

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Abell 39

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Abell 39

Abell 39 L=O red=H x R green=O x G blue= O x B

Cet objet est une nébuleuse planétaire faible à environ 7 000 années-lumière de la constellation d'Hercule. Cette image est une palette HOO, l'oxygène étant l'émission dominante. La nébuleuse est l'une des plus grandes nébuleuses planétaires sphériques connues avec un diamètre d'environ 5 années-lumière. Son étoile naine blanche chaude centrale est facilement visible sur cette image, presque parfaitement centrée. Le bord brillant de la nébuleuse planétaire a une épaisseur moyenne d'environ 0,34 année-lumière et sa luminosité varie légèrement autour de la circonférence. La région centrale montre une certaine variation de la nébulosité. Des instruments plus puissants montrent que plusieurs des petites "étoiles" à l'intérieur et immédiatement à l'extérieur de la nébuleuse sont de faibles galaxies, pas des étoiles.

texte de Gary IMM

Final
Original
B
C

Planetary Nebulae
Abell Planetary Nebula
N.I.N.A. Users
ZWO ASI1600MM/QHY163M
Narrowband imaging
Low-Cost Astrophotography
Fast Newtonians

0a.Most Recent
2b.NarrowBand S2-Ha-OIII
Nébuleuses planétaires (Ctlg PK, Abell...)

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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
Deep sky
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	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
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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	3673341
PixInsight job	LYEKHN6G0W69WB5ABXF3NJ2BAOV4NPRI
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	16h27m34s.30
RA (top/left)	16h29m51s.90
RA (top/right)	16h24m45s.92
RA (bottom/right)	16h25m18s.26
RA (bottom/left)	16h30m21s.20

Dec (center)	+27°54′32″.5
Dec (top/left)	+28°24′58″.4
Dec (top/right)	+28°16′04″.9
Dec (bottom/right)	+27°23′58″.3
Dec (bottom/left)	+27°32′47″.9

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Abell 39

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