M97 et M106 (Charles-Louis Estavoyer)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: M 108 · M 97 · NGC 3556 · NGC 3587 · NGC 3594 · Owl Nebula · PK148+57.1

Powered byPixInsight

M97 et M106

Powered byPixInsight

M97 et M106

Le hibou et la planche de surf

Sur cette image, deux objets insolites du catalogue de Messier partagent le champ, dans la constellation de la Grande Ourse.

M97, la nébuleuse du Hibou, découverte en 1781 est une "nébuleuse planétaire", terme bâtard désignant la coquille de gaz éjecté par une étoile en fin de vie (dont il ne reste "qu'une" naine blanche, une fois le cataclysme passé). A 729 ± 35 parsecs (∼2 380 années-lumière) de nos pénates, c'est un objet "relativement" proche; faisant tout du moins partie de notre galaxie. Son âge estimé est de 6000 ans.

M97 s'étend sur une distance d'environ 2,35 années-lumière et sa masse totale est d'à peine 0.15 masse solaire. La naine blanche, visible entre les deux yeux du hibou est un petit objet dégénéré pesant des milliards de tonnes par centimètre carré; il concentrerait encore la moitié de la masse de notre propre étoile.

Proche sur la ligne, M108, la galaxie de la Planche de Surf est pourtant 5300 fois plus lointaine de nous que ne l'est M97. C'est une belle spirale barrée un peu moutonneuse distante 32 millions d'années-lumière ; avec un diamètre de 80 000 a-l, elle est un peu plus petite que notre propre galaxie. Elle a pour autres particularités d'être "du champ" c'est à dire de ne pas faire partie d'un amas (comme c'est souvent le cas) et d'être une galaxie à sursauts de formation d'étoiles, au profil souvent spectaculaire.

Seulement 50x1mn sous mon ciel tout pourri, avec une lune gibbeuse croissante.

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	4253397
PixInsight job	7X3FFV8K241C8S64ZSVU940UKRCZMU8G
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	11h13m34s.61
RA (top/left)	11h17m01s.71
RA (top/right)	11h10m53s.68
RA (bottom/right)	11h10m13s.86
RA (bottom/left)	11h16m10s.35

Dec (center)	+55°12′14″.3
Dec (top/left)	+55°50′50″.6
Dec (top/right)	+55°55′01″.6
Dec (bottom/right)	+54°33′13″.1
Dec (bottom/left)	+54°29′06″.9

Image Index:

Contribution Index (beta):

M97 et M106

M97 et M106

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

		...
You have no new notifications.

Image Index:

Contribution Index (beta):

M97 et M106

M97 et M106

Equipment

Acquisition details

Description

Comments

Sky plot

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