A celebration Bubble! (Richard Francis)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: Bubble Nebula · LBN 548 · LBN 549 · LDN 1231 · NGC 7635 · Sh2-162

Powered byPixInsight

A celebration Bubble!

Powered byPixInsight

A celebration Bubble!

On 21 Nov 2020 a satellite called Sentinel-6 was launched from Vandenburg on a Falcon-9. Before my retirement in 2015 I had been the Project Manager for this satellite, having been responsible for it since 2008 when it was just an interesting idea. Naturally I should have been at the launch myself, but Covid meant that was going to be impossible, so I had to follow the proceedings on live video feeds.

Inevitably, that evening involved a few bottles of champagne, commonly called "bubbles", or "bulles" in French, where we live. So the next night I decided to start on an image of the Bubble Nebula in celebration.

The Bubble Nebula, NGC 7635, in the constellation of Cassiopeia, was discovered in 1787 by William Herschel. It is surprisingly far away, at a distance of more than 7000, and maybe as many as 11000 light years. The bubble is embedded in a region of ionised hydrogen (an HII region), which is energised by a hot, massive star within the bubble itself, causing it to emit light.

The bubble itself is the outer boundary of the powerful, high-speed "stellar wind" which is surging away from the surface of the super-hot star; as it slams into the cold gas in this region of space it heats it up, so hot that it becomes ionised and glows with emitted light.

This is a false-colour image with red showing light emitted by sulphur, green showing hydrogen emissions and blue showing the light emitted by oxygen, which dominates the hot shock front of the bubble's surface.

UK Astro-Imaging
Astrophotographes (France)
Narrowband imaging
PixInsight Addicts

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	5358788
PixInsight job	GOXM9PIK8NMKL488ROFPPFQCYFPT42K3
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	23h20m37s.575
RA (top/left)	23h23m16s.370
RA (top/right)	23h18m00s.900
RA (bottom/right)	23h18m02s.149
RA (bottom/left)	23h23m12s.400

Dec (center)	+61°10′28″.48
Dec (top/left)	+61°29′10″.41
Dec (top/right)	+61°29′16″.98
Dec (bottom/right)	+60°51′34″.46
Dec (bottom/left)	+60°51′28″.100

Image Index:

Contribution Index (beta):

A celebration Bubble!

A celebration Bubble!

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

In these public groups

		...
You have no new notifications.

Image Index:

Contribution Index (beta):

A celebration Bubble!

A celebration Bubble!

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