Sh2-63 is an unusual object located in Sagittarius.
Variously classified as an emission nebula, a molecular cloud and an HII region. The surface brightness is extremely low, and while there is clearly Ha content it is quite weak requiring considerable exposure time to resolve the image and underlying colors.
Imaged in LRGB and H Alpha on our DR 350 at El Sauce, Obstech, Chile
Image Processing: Mike Selby