C9 (SH2-155) The Cave Nebula A Layered Image in SHO and HOO (Steve Argereow)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: HD216532 · HD216629 · HD216658 · HD216711 · HD216898 · HD217035 · HD217061 · HD217086 · HD217099 · HD217312 · HD217463 · HD217657 · HD217966 · LBN 524 · LBN 527 · LBN 529 · LDN 1215 · LDN 1216 · LDN 1218 · PK110+01.1 · Sh2-155

Powered byPixInsight

C9 (SH2-155) The Cave Nebula A Layered Image in SHO and HOO

Powered byPixInsight

C9 (SH2-155) The Cave Nebula A Layered Image in SHO and HOO

I processed this Image in SHO (Hubble Palette) and HOO and then layered them in GIMP
70% SHO 30% HOO

Sh2-155 (also designated Caldwell 9, Sharpless 155 or S155) is a diffuse nebula in the constellation
Cepheus, within a larger nebula complex containing emission, reflection, and dark nebulosity. It is
widely known as the Cave Nebula, though that name was applied earlier to Ced 201, a different nebula
in Cepheus. Sh2-155 is an ionized HII Region with ongoing star formation activity, at an estimated
distance of (2400 light-years) from Earth.

Information Credits: Wikipedia

Telescope: Meade 80mm APO Refractor f/6.0 (480mm Focal Length)
Meade X0.8 Reducer f/4.8 (384mm Focal Length)
Mount IOptron CEM40
Camera ZWOASI1600MM-Pro Temp -10C, Binning 1 x 1, Gain 139 Offset 100
ZWO EFW

45 X 240 Second Exposures ZWO Ha (7nm)
45 X 240 Second Exposures ZWO SII (7nm)
46 X 240 Second Exposures Astrodon OIII (3nm)
30 Dark Frames/40 Flats
Total Integration Time: 9 Hours 4 Minutes
Acquisition with SharpCap
Stacked with Astro Pixel Processor
Guiding PHD2
Processed with Astra Image/GIMP
Photo taken from Seven Lakes, NC Bortle 4.5

North Carolina Astronomers
SharpCap Users
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	8755273
PixInsight job	PNS6R5HZX847PWAQFI7I49HCAHWTTTWG
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	22h57m35s.15
RA (top/left)	22h51m45s.71
RA (top/right)	22h51m32s.97
RA (bottom/right)	23h03m06s.63
RA (bottom/left)	23h03m55s.43

Dec (center)	+62°31′45″.4
Dec (top/left)	+63°17′55″.3
Dec (top/right)	+61°47′58″.7
Dec (bottom/right)	+61°44′47″.8
Dec (bottom/left)	+63°14′34″.2

Image Index:

Contribution Index (beta):

C9 (SH2-155) The Cave Nebula A Layered Image in SHO and HOO

C9 (SH2-155) The Cave Nebula A Layered Image in SHO and HOO

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

In these public groups

		...
You have no new notifications.

Image Index:

Contribution Index (beta):

C9 (SH2-155) The Cave Nebula A Layered Image in SHO and HOO

C9 (SH2-155) The Cave Nebula A Layered Image in SHO and HOO

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