A Zoomable Crescent Nebula NGC6888 C27 SH2-105, now aka 'The Dog Nose Nebula' (Bob Stevenson)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: Crescent Nebula · HD192003 · HD192020 · HD192102 · HD192163 · HD192182 · HD192303 · HD192361 · HD228153 · HD228185 · HD228186 · HD228205 · HD228243 · HD228289 · HD228304 · HD228324 · HD228376 · LBN 203 · NGC 6888 · Sh2-105

Powered byPixInsight

A Zoomable Crescent Nebula NGC6888 C27 SH2-105, now aka 'The Dog Nose Nebula'

Powered byPixInsight

A Zoomable Crescent Nebula NGC6888 C27 SH2-105, now aka 'The Dog Nose Nebula'

It is a bit ironic that in one of the worst summers for air quality in Southern Ontario I think I have collected my finest data set yet. I waited until I had a good amount of Ha and OIII data, and used 2x drizzle in WBPP to get a large file size. I was extremely careful in Pixinsight and Photoshop not to introduce noise in each step, and careful not to blow away details with noise reduction. I think the result is an image that is fun to look even at the highest zoom level.

I found that I had to step the OIII data back a bit in places to let some of the Ha details through in the final image. The blue shell would have overwhelmed these fine details otherwise.

The Crescent is an emission nebula about 5,000 light years away. It is formed by the fast stellar wind from the central Wolf-Rayet star (WR136 or HID 192163) colliding with its own slower moving stellar wind when the star was only a red giant some 300,000 years ago.

If you are interested, I have uploaded the Ha and OIII images as alternate versions.

CS
Bob

Original
F
G

F

Description: Ha only

Uploaded: ...

G

Description: OIII only

Uploaded: ...

Schmidt-Cassegrain Telescope (SCT) Imagers
Canadian Astrophotography
ZWO ASI2600MM Pro
IOptron CEM
Imaged with N.I.N.A.

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	8479085
PixInsight job	8Z3SAURE0JNIN945JK1VUU66VOUYGMF6
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	20h12m08s.761
RA (top/left)	20h11m15s.764
RA (top/right)	20h10m48s.636
RA (bottom/right)	20h13m01s.149
RA (bottom/left)	20h13m29s.459

Dec (center)	+38°20′44″.56
Dec (top/left)	+38°42′04″.83
Dec (top/right)	+38°03′00″.49
Dec (bottom/right)	+37°59′24″.36
Dec (bottom/left)	+38°38′25″.89

Image Index:

Contribution Index (beta):

A Zoomable Crescent Nebula NGC6888 C27 SH2-105, now aka 'The Dog Nose Nebula'

A Zoomable Crescent Nebula NGC6888 C27 SH2-105, now aka 'The Dog Nose Nebula'

Equipment

Acquisition details

Description

Comments

Revisions

F

G

Sky plot

Histogram

In these public groups

		...
You have no new notifications.

Image Index:

Contribution Index (beta):

A Zoomable Crescent Nebula NGC6888 C27 SH2-105, now aka 'The Dog Nose Nebula'

A Zoomable Crescent Nebula NGC6888 C27 SH2-105, now aka 'The Dog Nose Nebula'

Equipment

Acquisition details

Description

Comments

Revisions

F

G

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?

Delete this revision?

Delete this revision?

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