NGC 7635

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: Bubble nebula · NGC 7635

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NGC 7635

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NGC 7635

Seeing = 3.07

Uniquement LRGB avec des poses de 3 min

R=12 poses

G=10 poses

B= 15 poses

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NGC 7635, nébuleuse de la Bulle, est une nébuleuse d'environ 10 années-lumière de diamètre située dans la constellation de Cassiopée, dans une région HII d'hydrogène ionisé.

La bulle est formée par le vent stellaire créé par l'étoile SAO 20575 (BD+60 2522) à une vitesse de plus de 1 700 km/s. Cette étoile, excentrée par rapport au nuage, est la plus brillante, très jeune (moins de 4 millions d'années), très chaude (environ 35 000 degrés) et massive (de 20 à 40 fois la masse solaire). L'étoile n'est pas au centre car le nuage en expansion rencontre une région plus dense et plus froide sur un côté. Elle devrait exploser en supernova dans 10 à 20 millions d'années.

On peut deviner une structure proche des piliers de la création en direction de l'étoile à l'origine

de la Bulle.

(Source : Wikipedia)

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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	Basic success
Started	...
Astrometry.net job	2361124
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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NGC 7635

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NGC 7635

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