SH2-188 - The Shrimp Nebula (HOO) (Team OURANOS)

SH2-188 - The Shrimp Nebula (HOO)

Link: https://team-ouranos.fr/sh2-188/

Sh2-188 (sometimes nicknamed the "Shrimp" - or Firefox - Nebula, because of its shape) is a planetary nebula in the constellation Cassiopeiae.

Although included in the Sharpless catalog, it is in fact an unusual planetary nebula, located at a distance of around 711 light-years.

It appears as a well-marked envelope on the eastern side and very scattered on the western side, where it seems to have already dissolved. In appearance, it is reminiscent of the Sh2-274 nebula.

Thanks to its rate of expansion, an age of around 7,500 years has been determined. Although its appearance resembles a supernova remnant, this possibility has been ruled out by the nature of its emissions.

For this image, acquired in Ha and OIII, we opted for a more complex mix than the traditional HOO, to approximate a SHO rendering.

----------------------------------------------------

Sh2-188 (surnommée parfois la nébuleuse "de la crevette" - ou "Firefox" - en raison de sa forme) est une nébuleuse planétaire visible dans la constellation de Cassiopée.

Bien qu'elle ait été incluse dans le catalogue Sharpless, il s'agit en fait d'une nébuleuse planétaire atypique, située à une distance d'environ 711 années-lumière.

Elle apparaît comme une enveloppe bien marquée du côté est et très dispersée du côté ouest, où elle semble s'être déjà dissoute. En apparence, elle rappelle la nébuleuse Sh2-274.

Grâce à sa vitesse d'expansion, un âge d'environ 7500 ans a été déterminé. Bien que son apparence ressemble à un reste de supernova, cette possibilité a été exclue en raison de la nature de ses émissions.

Pour cette image, dont les acquisitions ont été réalisées en Ha et en OIII, nous avons opté pour un mixage plus complexe que le HOO traditionnel, pour se rapprocher d'un rendu SHO.

Planetary Nebulae
Astrophotographes (France)
Narrowband imaging
Rarely Imaged Small DSOs
Sharpless2 Objects

	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

	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

	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

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	9879589
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

Image Index:

Contribution Index (beta):

SH2-188 - The Shrimp Nebula (HOO)

SH2-188 - The Shrimp Nebula (HOO)

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

In these public groups

		...
You have no new notifications.

Image Index:

Contribution Index (beta):

SH2-188 - The Shrimp Nebula (HOO)

SH2-188 - The Shrimp Nebula (HOO)

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

In these public groups

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