Cave Nebula (Sh2-155) (Jarrett Trezzo)

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

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Cave Nebula (Sh2-155)

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Cave Nebula (Sh2-155)

This complex and colorful area is located approximately 2,400 light years distant in the constellation Cepheus, near the edge of the Cepheus B Molecular Cloud. It contains emission (red), reflection (blue), and dark nebulae, as well as Herbig-Haro star birthing regions (orange area in bottom middle).

This is just a testament to technology available to us amateurs these days. 2/5 transparency and lightning flashes in the distance lighting up the whole sky a few times a minute. I expected nothing good but love how this turned out.

Original
C
Final
D

C

Description: toned down the reds a bit

Uploaded: ...

D

Description: reprocessed 2020

Uploaded: ...

Schmidt-Cassegrain Telescope (SCT) Imagers
HyperStar Lens Astrophotography
The OSC Club (One Shot Camera)
Cloudy Nights
Cooled Color Cams
Suburban Astrophotography
QHY Users Group
Images from the EdgeHD Series

Emission Nebulae
Images with EdgeHD 9.25 Hyperstar
Images with QHY247C

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
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Top picks
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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	2142985
PixInsight job	VEW7VPNHPC0VEGYD7HNHBYYASEGON753
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	22h56m32s.28
RA (top/left)	23h07m37s.31
RA (top/right)	22h45m42s.32
RA (bottom/right)	22h46m00s.16
RA (bottom/left)	23h06m47s.28

Dec (center)	+62°27′22″.8
Dec (top/left)	+63°11′43″.7
Dec (top/right)	+63°14′50″.1
Dec (bottom/right)	+61°39′53″.5
Dec (bottom/left)	+61°36′58″.4

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Cave Nebula (Sh2-155)

Cave Nebula (Sh2-155)

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Image Index:

Contribution Index (beta):

Cave Nebula (Sh2-155)

Cave Nebula (Sh2-155)

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Acquisition details

Description

Comments

Revisions

C

D

Sky plot

Histogram

In these public groups

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