Sh2-155 Cave Nebula (Alan Brunelle)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: PK110+01.1 · Sh2-155 · VdB155

Powered byPixInsight

Sh2-155 Cave Nebula

Powered byPixInsight

Sh2-155 Cave Nebula

This region has a lot going on in it making for somewhat of a challenge regarding colors and background. A simple stretch after stacking showed a good deal of reflection nebulosity in the whole of the lower left quadrant. Maybe not as interesting as the clear smaller regions of reflection in the upper and lower left, but it sure makes the small inky patches show well at the bottom. I learned that this can be eliminated in processing, but I wanted to preserve it.

I am sure that an Ha image would show as much redder than this OSC image, but I like that the OSC differentiated the reds in the small embedded stars in the upper left/center from the main body of the Cave Nebula. I believe that such emissions from those embedded regions may be less due to Ha but rather to black body radiation from dust in the near IR and red wavelengths. Speculation for sure, so I will need to get some good filters to analyze this sort of stuff in the future!

This may be a work in progress, since these 40 subs may get enhanced by another 50 or so from another night. Not sure they can add anything and I will need to figure out how to do that. Still dealing with tilt issues. Improved the issue a bit by adjusting camera tilt, but still issues here and there. I believe that the real issue is with the telescope and dread dealing with that.

Original
Final
B

B

Description: Corrected green cast

Uploaded: ...

PixInsight Addicts
Sharpless2 Objects
AstroBin Platform open discussions community forum
Celestron RASA
The OSC Club (One Shot Camera)
CMOS Imagers
ASI 071 mcc
Pacific Northwest Astrophotographers
N.I.N.A. Users
Dark Nebula

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	3704316
PixInsight job	9ACVF4HQV9ETLUSKMTHLE6FH5PRR9C18
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	22h56m54s.20
RA (top/left)	22h58m27s.44
RA (top/right)	22h46m04s.82
RA (bottom/right)	22h55m12s.50
RA (bottom/left)	23h07m30s.69

Dec (center)	+62°35′15″.1
Dec (top/left)	+61°20′06″.1
Dec (top/right)	+62°50′53″.5
Dec (bottom/right)	+63°50′21″.9
Dec (bottom/left)	+62°16′34″.6

Image Index:

Contribution Index (beta):

Sh2-155 Cave Nebula

Sh2-155 Cave Nebula

Equipment

Acquisition details

Description

Comments

Revisions

B

Sky plot

Histogram

In these public groups

		...
You have no new notifications.

Image Index:

Contribution Index (beta):

Sh2-155 Cave Nebula

Sh2-155 Cave Nebula

Equipment

Acquisition details

Description

Comments

Revisions

B

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