The Bubble Nebula (HR_Maurer)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: Bubble Nebula · HD220057 · HD240248 · HD240253 · LBN 544 · LBN 548 · LBN 549 · LDN 1231 · NGC 7635 · Sh2-162

Powered byPixInsight

The Bubble Nebula

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

Powered byPixInsight

The Bubble Nebula

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

My version of the popular Bubble Nebula NGC 7635 in SHORGB.

Even though this nebula is shown very frequently, here some facts i gathered:
NGC 7635 is a HII region in constellation Cassiopeia in aproxinately 7000 LJ distance. A very young, hot 7.8 Mag O-star named BD +60° 2522 (~46 solar masses) is ejecting large amounts of stellar winds with velocities above 1800 km/s. These plasma winds form a heliosphere of about 7 LJ diameter, and finally crash into the surrounding molecular cloud. An approximately sperical shaped shock front established, where the kinetic energy of the lasma winds excite optical transitions we can observe in our telescopes, commonly in HII and [OIII]. For comparison, the heliosphere of our sun is approximately 2000 times smaller (roughly 200 AU in diameter, if a diameter can be defined).
The density of the cold surrounding medium is not uniform, so the shock front appears very off centered with respect to the origin of the winds (i didn't find any data about it's moving velocity with respect to the ISM). So, from our perspective, the O-star is located at a bubble radius of about 60%.
Moreover, the surrounding gas is excited by large amounts of ultraviolet light, while being pushed away, creating those beautiful finger-like structures with strong emission in Hydrogen, Nitrogen and Sulphur.

Astrophotography Germany
"Nordish by nature"
Narrowband imaging
Suburban Astrophotography
Sharpless2 Objects
Fast Newtonians
CMOS Imagers
QHY Users Group
N.I.N.A. Users

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	6190797
PixInsight job	OOWGIEN63AGCJD5P6FPQ1MC0JXKB1484
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	23h20m45s.300
RA (top/left)	23h23m50s.147
RA (top/right)	23h24m19s.283
RA (bottom/right)	23h17m32s.960
RA (bottom/left)	23h17m19s.381

Dec (center)	+61°12′33″.11
Dec (top/left)	+60°33′28″.68
Dec (top/right)	+61°49′45″.80
Dec (bottom/right)	+61°51′24″.98
Dec (bottom/left)	+60°35′00″.97

Image Index:

Contribution Index (beta):

The Bubble Nebula

The Bubble Nebula

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

In these public groups

		...
You have no new notifications.

Image Index:

Contribution Index (beta):

The Bubble Nebula

The Bubble Nebula

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