Worked on getting the filamentous circle described below in detail with General Hyperbolic Stretch and the CMOS camera. The GalaxyMap discussion cited below implies it has been seen as a remnant, but it more likely just random Ha filaments, which I tried to highlight.
Previous CCD version focused on the Dragon.
The Flying Dragon Nebula (Sh2 113 114) Discussion of GHS aspects of processing:
GHS Forum DiscussionFrom GalaxyMap:Sh 2-113 and Sh 2-114 form, respectively, the southern and northern portions of a filamentary circle that
resembles a supernova remnant. However, no supernova remnant appears to be recorded for this location.
Examining this region in
hydrogen-alpha suggests that these nebulae are joined to the equally mysterious
Sh 2-118 and
Sh 2-123 in a long ridge of nebulosity south and south-east of
Sh 2-117, the North American nebula. Sh 2-113, Sh 2-118 and Sh 2-123 have distance estimates of about 4000 parsecs. If this ridge is also at 4000 parsecs, it must be enormous.
This identical structure can be seen in more detail at the bottom left of this
radio and far infrared image of the Cygnus region.
You can view an image of both Sh 2-113 and Sh 2-114 together at the bottom of
this page.
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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