This feature near the Keyhole is giving you the finger! :-)

Enlarged from the original wide field image.
Stars have been removed from the image to accentuate the nebulous feature

AP152 F7.5 Starfire APO refractor with 4" field flattener
FLI ProLine11002 CCD & CFW-2-7
LHaRGB = 10 20 10 10 10min (bin 1X1) Astronomik filters
-35C chip temp, darks and flats (AstroHandy LightRing used for flats)
Focal Length 1300mm
Image scale 1.4"/pix
Guide Camera: Starlightxpress SXVH9