Sh2 122 LRGB Invisible Dust Clouds (Jerry Yesavage)

Sh2 122 LRGB Invisible Dust Clouds

I am checking in object again with my CMOS camera to try to optimize my Sharpless2 Collection. I had this in a wide angle H-alpha but it is supposed to be a dust cloud here. Anyway, after a lot of exposures in my light pollution I see nothing.... even when super stretched. Like Sh2 178.

Another dud here:

https://www.astrobin.com/7pk5zf/

From GalaxyMap:

Sh 2-122 is likely a reflection nebula illuminated by an embedded but unseen star and associated with the molecular cloud MBM 55, at a distance of 150 pc.

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

There are 313 Sh2 objects which I have managed to image over about a 7 year period.

Some of the challenges with this series are FOV size and low declination:

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.

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.

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.

The first one was taken on December 23, 2013 and the series completed October 17, 2019.

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...

Cloudy Nights
Narrowband imaging
Sharpless2 Objects

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	5178312
PixInsight job	HZLNR79SSMIZ5FE883I7SQX9FG6QL0KU
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	23h08m51s.585
RA (top/left)	23h13m22s.660
RA (top/right)	23h04m20s.690
RA (bottom/right)	23h04m22s.781
RA (bottom/left)	23h13m20s.276

Dec (center)	+14°55′50″.85
Dec (top/left)	+15°39′04″.75
Dec (top/right)	+15°39′02″.84
Dec (bottom/right)	+14°12′17″.48
Dec (bottom/left)	+14°12′20″.30

Image Index:

Contribution Index (beta):