SH2-155 Cave Nebula SHO (Graham Roberts)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: LBN 524 · LBN 527 · LBN 529 · LDN 1215 · LDN 1216 · LDN 1218 · LDN 1220 · PK110+01.1 · Sh2-155 · VdB155

Powered byPixInsight

SH2-155 Cave Nebula SHO

Link: https://watchthisspaceman.wordpress.com/2021/10/01/galactic-grotto/

Powered byPixInsight

SH2-155 Cave Nebula SHO

Link: https://watchthisspaceman.wordpress.com/2021/10/01/galactic-grotto/

Located along the plane of the Milky Way in the Cepheus constellation is the diffuse emission nebula Sh2-155, commonly referred to as the Cave Nebula. This widefield view shows the so-called Cave at centre of the image, critically located at the boundary of the massive Cepheus molecular cloud and the hot, young stars of the Cepheus OB-3 association which ionize the surrounding gases to great photographic effect. Overall the features are very faint and even with a total integration time of nearly 40-hours for the full data-set the Cave is difficult to capture and process using the Hubble SHO palette but nonetheless has resulted in a striking final image (see top-of-the-page). An alternative bicolour HOO cropped version perhaps shows the details of Cave itself better?

Total Integration Time 39hr 30 mins
29 SII x 1,800 secs
20 Ha x 1,800 secs
30 OIII x 1,800 secs

For further inforamtion please refer to my website link at the top of the page

Final
Original
B

B

Description: HOO 60% cropped version

Uploaded: ...

AstroBin Platform open discussions community forum

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	5054646
PixInsight job	0SIKQ16C02H47GRV53VXCL4JXTM8879R
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	22h57m36s.99
RA (top/left)	23h06m06s.96
RA (top/right)	22h49m09s.97
RA (bottom/right)	22h49m31s.21
RA (bottom/left)	23h05m43s.88

Dec (center)	+62°32′54″.10
Dec (top/left)	+63°14′52″.2
Dec (top/right)	+63°15′02″.7
Dec (bottom/right)	+61°49′05″.7
Dec (bottom/left)	+61°49′06″.8

Image Index:

Contribution Index (beta):

SH2-155 Cave Nebula SHO

SH2-155 Cave Nebula SHO

Equipment

Acquisition details

Description

Comments

Revisions

B

Acquired at

Sky plot

Histogram

In these public groups

		...
You have no new notifications.

Image Index:

Contribution Index (beta):

SH2-155 Cave Nebula SHO

SH2-155 Cave Nebula SHO

Equipment

Acquisition details

Description

Comments

Revisions

B

Acquired at

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?

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