NGC6960 (Werny Michael)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: NGC 6960 · The star 52 Cyg · Veil Nebula

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NGC6960

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NGC6960

Salut à tous,
Comme d'habitude, je continue de traiter des anciennes acquisitions...
Voici NGC6960, le balai de la sorcière.

Une capture que j'avais à l'époque rejetée faute de piqué sur l'image, je me rend compte avec le recul (et aussi le manque de météo pour faire de nouvelles captures) que cette dernière mérite publication.

On remarque ici une très grosse présence de signal OIII (oxygène doublement ionisé), en réalité c'est plutôt le signal HA (hydrogène alpha) qui est en retrait !
En effet le filtre utilisé ici (L-extreme) combiné à l'ouverture rapide du télescope (F4) commence à perdre de la transmission dans la raie d'émission du HA (656.3 nanomètres).

Mais qu'est-ce que NGC6960 ?

Située à environ 1400 années lumière de notre petite terre, ce grand nuage de gaz ionisés et de poussières est ce que l'on appelle un rémanent de supernova (un rémanent de supernova est la matière éjectée lors de l'explosion d'une étoile en supernova).
Visible dans la constellation du cygne, ce balai fait partie d'un vaste nuage appelé "Les dentelles du cygne" (SNR G074.0-08.6)

Lieu / date : Tinlot (Belgique) - 13/08/2021
Acquisition : 02h12 (180 x 44 sec) + DOF
Matériel : EQ6R pro - Newton 150/600 - Asi2600 mc - L-Extreme
Traitement : Siril - Pixinsight - Lightroom

Bon ciel!

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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
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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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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	Basic success
Started	...
Astrometry.net job	5848687
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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NGC6960

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