An new ZWO ASI 6200MM Pro view. There is a reflection nebula in there that I cannot visualize from my urban site... if you look in the refered image below as "here" from GalaxyMap.
The old one:
Sh2 150 HA RGB Avedisova identifies two B-class ionising stars,
HD 213087 and
HD 213405.
You can see a beautiful photograph of this faint nebula
here.
Sh 2-150 appears to be part of the
Cepheus bubble, the expanding ring of gas and dust surrounding the star cluster
NGC 7160 and the
Cep OB2 association. The much brighter nebula
Sh 2-131 is part of the same structure.
From
GalaxyMap:This massive star formation region is associated with a 7000 solar mass molecular cloud and many sources in the far infrared.
GENERAL NOTE ON SHARPLESS2 OBJECTS>>>>>>>>>>>>>
There are 313 Sh2 objects and I have imaged all one way or another.
The first one was taken on December 23, 2013 and the series completed October 17, 2019.Some of the challenges with this series are FOV size and low declination:
FOV: 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.
DEC: 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.
EQUIPMENT: 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...
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