Tried for some really dim objects in Vela. Also got a part of the Vela super nova remnant which covers a huge region of sky. It is on the right side of the field.
Details Canon 5DH. Canon 300mm F2.8 at f2.8,Astronomic 10nm HA filter, 3x20 min at ISO 200. The usuals.
FOV 6.8x4.6 degrees.
There is a couple of maps below, made with Star Atlas Pro showing where these objects are. The name Gum comes from the Australian astronomer Colin Stanley Gum 1924-1960 who surveyed and catalogued them.
Also a source for RCW objects here
http://galaxymap.org/cgi-bin/rcw.py?s=31
I suppose being thirty or forty years behind the pro's is not too bad.
Bert