Sh2 160 with New Star Coloration Techniques in Revisions (Jerry Yesavage)

Sh2 160 with New Star Coloration Techniques in Revisions

Revisiting my old friends with the new camera.

From GalaxyMap:

The HII region Sh 2-160 is located near or within the Cep OB3 association, which is part of the relatively nearby Cepheus molecular clouds, as can be seen on this face-on map.

Sharpless lists three possible ionising stars including the B0 III giant HD 218323, which Humphreys assigns to Cep OB3.

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

There are 313 Sh2 objects. As of the date of this image I had imaged 310 (99%).

Here is the scorecard:

There are 11 too diffuse/large to image well with my set up (Sh2 111, 117, 122, 131, 132, 145, 178, 218, 230, 268 and 310). I have imaged the first 6 of these mostly in the Nikon Wide angle shot referenced below and 178 and 230 as part of other images. I will do the rest at least once as they come into view this year. I missed 303, 304 310 last year running out of time. So there are these 3 more to do here.

There are 5 that are never above 14 DEG (Sh2 2-6) but as of 7/12/21 I can get these now with pier upgrades and the images are completed as best as I can.

The 3 remaining all are in Expert Scheduler waiting for them to pass by. They are all higher elevations.

The first one was taken on December 23, 2013.

Many were taken with my old Tak 180 ED, which had a wide field of view, but was replaced with my Stellarvue 130, which is more narrow field. I have also taken two very wide field HA images with my Nikon D800 and a 50mm lens. I transitioned from my CCD SBIG 8300M to a CMOS ZWO ASI6200M Pro in September 2021.

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 1500 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...

Original
C
Final
D

C

Description: HA RGB

Uploaded: ...

D

Description: Reworking of the stars using two new techniques thanks to Gary Ilm:
1. ArcSin stretching of the RGB image to enhance the color saturation... rather than standard STF
2. Star masking from the RGB_HA and using the above saturated stars to replace the RGA_HA stars by copying the RGB_HA image over the saturated star masked RGB image.
This is not simple and you need a check list.

Uploaded: ...

Sharpless2 Objects
Cloudy Nights

Sharpless2 Objects

	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

	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

	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

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	5077439
PixInsight job	FFOWD6RW6BZI4DZUKYV4YV1B6D5FMKCA
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	23h05m54s.550
RA (top/left)	22h55m59s.999
RA (top/right)	23h15m58s.978
RA (bottom/right)	23h16m22s.523
RA (bottom/left)	22h55m17s.910

Dec (center)	+64°39′54″.90
Dec (top/left)	+63°54′06″.84
Dec (top/right)	+63°55′34″.46
Dec (bottom/right)	+65°22′58″.27
Dec (bottom/left)	+65°21′25″.88

Image Index:

Contribution Index (beta):