DWB 111, aka "Propeller Nebula" Bright Nebula in Cygnus

Located at: RA 20 hours 16 minutes 12 seconds, Dec +43 degrees 41 minutes 10 seconds

Size: ~20' x 25' Magnitude: -- Class: Emission; HII region

North is up

West to the right

Telescope:

8" f5 Newtonian reflector

Camera:

ST-8XME, self-guided, binned 1x1, temp -15c & -20c, camera control MaxIm DL 4.56

Image:

 Lumicon Red filter, 1010 minutes (101 x 10 minute subs), 07/2/6/7/8/9/10/2012; seeing FWHM 2.4-3.8 per CCDStack

Processing:

CCDStack 2.66.4490.32361, Photoshop CS5.1

Location:

Rolling Roof Observatory, Thousand Oaks, California 91360 (+34d 13m 29s -118h 52m 20s)

Notes: DWB = Dickel, Wendker and Bieritz. Designation is from the map of Ha emission nebulae in the Cygnus X region. Numbering from 1 to 193. Referenced from the "Atlas of Galactic Nebulae" (AGN II), by Thorsten Neckel and Hans Vehrenberg. CDS image / data. See this image of DWB 111 by Hunter Wilson, with a .pdf link to the actual catalogue ... or the catalogue here from the SAO/NASA ADS Astronomy Abstract Service.