Sh2 135 (Equipment Comparison) (Jerry Yesavage)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: 27 Cep · 27 del Cep · HD212136 · HD212566 · HD213232 · HD239904 · HD239906 · HD239908 · HD239912 · HD239923 · LBN 486 · LBN 489 · LBN 490 · LBN 491 · LBN 492 · LBN 493 · LDN 1179 · LDN 1180 · LDN 1185 · PK104+00.1 · Sh2-135 · The star δ Cep

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Sh2 135 (Equipment Comparison)

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Sh2 135 (Equipment Comparison)

Repeating one more of the Sharpless2 Group to see what my new CMOS system can find with a deeper look at the H-alpha here..... a lot of H-alpha.

Previous versions of SH2 135. The first with my old Tak 180 ED and the second with more detail of the object itself using 5h on the CCD, but same Stellarvue 130 scope.

Sh2 135 H-alpha RGB

Sh2 135 HA RGB (Warp Speed Processing)

Discussion of GHS aspects of processing:

GHS Forum Discussion

From GalaxyMap:

This nebula appears to be a blister on a dark dust cloud in front of the bright arc. The nebula is ionised by the O9.5V class BD+57 2513 and includes the star cluster Juchert 21.

GENERAL NOTE ON SHARPLESS2 OBJECTS>>>>>>>>>>>>>

There are 313 Sh2 objects. All now imaged.

This is my collection:

Sharpless2

Wide-Angle Hydrogen Alpha Nikon Image Sh2 79-171

Please note there is also a Sharpless2 Group with now more than 2700 examples.

Sharpless2 Group

Other useful links include:

Gary Imm's Collection

GalaxyMap's Collection

The Sharpless Catalog

The MDW H-alpha Sky Survey

Reiner Vogel's detailed observing catalog

Hope you enjoy these obscure but interesting objects...

Light Polluted skies
ASI 6200 MM Pro
The refractors!
Cloudy Nights
SF Bay Area Imagers
Equipment showcase
Members of Deep Sky West
"Simply Stellarvue"
Astrophotographes (France)
Fine Art Astrophotography
Narrowband imaging
Suburban Astrophotography
PixInsight Addicts
Sharpless2 Objects

Sharpless2 Objects

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	6249382
PixInsight job	2P3TV3CBMNF9BBWU7FB0UX8KFH0RYL2U
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	22h22m18s.143
RA (top/left)	22h30m33s.498
RA (top/right)	22h14m06s.744
RA (bottom/right)	22h14m21s.511
RA (bottom/left)	22h30m09s.804

Dec (center)	+58°44′34″.55
Dec (top/left)	+59°24′09″.82
Dec (top/right)	+59°24′58″.46
Dec (bottom/right)	+58°03′06″.63
Dec (bottom/left)	+58°02′26″.94

Image Index:

Contribution Index (beta):

Sh2 135 (Equipment Comparison)

Sh2 135 (Equipment Comparison)

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Image Index:

Contribution Index (beta):

Sh2 135 (Equipment Comparison)

Sh2 135 (Equipment Comparison)

Equipment

Acquisition details

Description

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