NGC 6992 - Nébuleuse du Voile Est (Arthur Grosmaitre)

NGC 6992 - Nébuleuse du Voile Est

Link: https://cosmics491591518.wordpress.com/

NGC 6992 - Nébuleuse du Voile Est

Link: https://cosmics491591518.wordpress.com/

La Nébuleuse du Voile Est photographiée avec Jean Choppin Haudry De Janvry pour l'association CosmiCS le 23 Août 2023 avec un Canon 5D Mk.II monté sur un Skywatcher 150ED en guidage équatorial simple. 40 photos de 3 minutes de pose ont été prises, pour un temps total d’exposition de 3h.

Cette nébuleuse de grande taille angulaire (longue d’environ deux diamètres lunaires) est une nébuleuse à émission située à 1500 années lumières. Faisant partie de l’ensemble des Dentelles du Cygne dans la constellation homonyme ces gaz sont les rémanents d’une supernova ayant explosé il y a une dizaine de milliers d’années. Ces dentelles constituent le plus grand rémanent de supernova visible depuis la Terre et témoigne d’un spectacle ayant libéré une énergie considérable.

En effet, les supernovas sont la mort par explosion d’étoiles dont les réactions de fusion s’emballent en fin de vie vers des éléments lourds comme l’Uranium ou l’Or. Ces évènements sont si violents que le dernier connu à ce jour, observé en 2016, a été estimé à 570 milliards de fois la luminosité de notre étoile, soit plus qu’une galaxie moyenne. Aujourd’hui, les gaz émettent une lumière de longueur d’onde propre à leur composition après avoir gagné en énergie par absorption de la lumière d’étoiles voisines. On retrouve alors ici deux couleurs principales, le orange/rouge caractéristique de la raie Hα de l’Hydrogène et le bleu (turquoise) caractéristique de la raie O III de l’Oxygène.

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

Image Index:

Contribution Index (beta):

NGC 6992 - Nébuleuse du Voile Est

NGC 6992 - Nébuleuse du Voile Est

Equipment

Acquisition details

Description

Comments

Histogram

		...
You have no new notifications.

Image Index:

Contribution Index (beta):

NGC 6992 - Nébuleuse du Voile Est

NGC 6992 - Nébuleuse du Voile Est

Equipment

Acquisition details

Description

Comments

Histogram

Notifications

AstroBin is in READ ONLY mode

Sorry :-(

Sorry :-(

Sorry :-(

Are you really sure?

Warning!

Warning!

Are you sure?

Report abuse

Slideshow settings

IOTD/TP stats (last [x] days)

Distribution of astrophotographers

Distribution of subject types

Distribution of data sources

Sorry

Sorry

Share

Upload new revision

Upload uncompressed source (XISF/FITS/PSD/TIFF)

Delete image and all its revisions?

Delete original image?

Delete all other versions?

Delete all revisions?

IOTD/TP stats

The following people like this image

The following people bookmarked this image

Warning

Flag malfunctioning thumbnails

Contains

Remove yourself as a collaborator

Plate-solving information