Another version of this group using my new CMOS camera.
The final version used the Narrowband Assistant PI script from
@Alex Woronow :
Also used the new version of StarXterminator (2.0.1 AI 11- full AI). Very slow but you can use now faster AIs, but the star correction is excellent... also is the destarring.
Previous version from a long time ago on CCD.
Sh2 155 Cave Nebula Discussion of GHS aspects of processing:
GHS Forum DiscussionFrom GalaxyMap:The Cave nebula interacts with the
Cepheus B molecular cloud and is ionised by stars that belong to the
Cep OB3 association.
Sharpless lists 9 potential ionising stars, including the B0 class
HD 217086. SIMBAD says that this object is actually a O7 Vn class young stellar object with multiple components.
Avedisova places Sh 2-155 in the massive star formation region
SFR 110.15+2.61 and lists 157 components, including 24 masers, 48 infrared sources and the dark nebulae
LDN 1211 and
LDN 1216.
You can read more about the history of star formation in this region in the
Cep OB3 section of the description of the
Brain and Bubble (120° - 110°) sector in the
Commentary on the Galactic Plane.
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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