Another set of obscure Sharpless2 objects that is seen in the context of the surrounding H-alpha clouds thanks to the CMOS chip and stretching optimized with GHS. Two are actually galaxies (191 and 197), and it is unclear what 1965 actually is, but they are all lined up for the portrait.
GHS Forum DiscussionA prior 191 exposure:
Sh2 191 H-alpha RGB (Maffei 1) Reprocessed From GalaxyMap:
Sh 2-191: Most of the visual luminosity in this direction comes from the giant elliptical galaxy Maffei 1. The Milky Way HII region
WB89 431 is visible nearby, especially in infrared.
Sh 2-195: Avedisova places Sh 2-195 in the star formation region
SFR 136.26-0.42 along with the prominent infrared source and pulsating variable M2 Iab supergiant
GP Cas.
Humphreys places GP Cas in the
Per OB1 association at a distance of 2290 parsecs.
A
hydrogen-alpha image created using
IPHAS data reveals extremely faint nebular patches near this direction (possibly partially associated with the galaxies Maffei 1 and 2) but no nebulosity in the direction of Sh 2-195 itself.
It seems possible that Sh 2-195 is not an HII region but is merely faint nebulosity seen in the general direction of GP Cas.
Sh 2-197: This is the galaxy Maffei 2.
GENERAL NOTE ON SHARPLESS2 OBJECTS>>>>>>>>>>>>>There are 313 Sh2 objects. All now imaged.
This is my collection:
Sharpless2Wide-Angle Hydrogen Alpha Nikon Image Sh2 79-171Please note there is also a Sharpless2 Group with now more than 2700 examples.
Sharpless2 GroupOther useful links include:
Gary Imm's CollectionGalaxyMap's CollectionThe Sharpless CatalogThe MDW H-alpha Sky SurveyReiner Vogel's detailed observing catalogHope you enjoy these obscure but interesting objects...
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