I first noticed this one when doing a Ha widefield lens image of the Milky Way and noticed this heart shaped nebula which is almost never imaged.
Here is a widefield image of part of it. It probably needs a mosaic or a wide lens to catch it all - around 150mm.
http://www.pbase.com/gregbradley/image/167916711/large
Alternate higher contrast processing:
http://www.pbase.com/image/167927213/large
Greg.
Attachment 231824