DWB-111, a/k/a the Propeller Nebula, is a faint emission nebula in
Cygnus. I imaged an LRGB of 50 minute components comprising 5-minuted
unguided subframes. Total was 200 minutes, all in one night.
Takahashi E160 astrograph, MX716 camera and AP1200GTO mount.

The DWB catalog stands for Dickel, Wendker, and Bieritz, who have
compiled a somewhat obscure (at least for me) catalog of faint
emission nebulae in the Cygnus X region.

Image at
http://home.att.net/~dpersyk/new.htm

Thank you for visiting my site.

Clear skies,

Dennis Persyk
Igloo Observatory Home Page http://dpersyk.home.att.net
Hampshire, IL