B 347 ([DB2002b] G78.56+0.70*) Dark Nebula in Cygnus

Located at: RA 20 hours 28 minutes 29 minutes, Dec +39 degrees 54 minutes 33 seconds

Size: 4.0' x 0.7' Magnitude: -- Class: 5 (Ir?)

North is up

West to the right


 8" f5 Newtonian reflector


 ST-8XME, self-guided, binned 1x1, temp -10 & -15c, camera control MaxIm DL 4.56


Lumicon Red filter, 760 minutes (76 x 10 minute subs), 08/4/5/6/7/2012; seeing 2.9-3.9 FWHM per CCDStack


CCDStack 2.66.4490.32361, Photoshop CS5.1


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

Notes: This field is a part of the the southern half of what is known as "The Butterfly Nebula". Also known as IC 1318, Gamma Cygni Region, and others. The dark lane to the northwest (upper right) is LDN 889. See here for a wide field (5.6 x 4.7) DSS image. CalTech/Palomar) color image of 'The Gamma Cygni' region.

This image replaces the 2008 image.

* CDS acronym BD...

This description from the on-line Edward Emerson Barnard "A Photographic Atlas of Selected Regions of The Milky Way":

α(2000)20h 28m 28s, δ(2000) +39 55
Galactic Coordinates 79,+1
 Dark streak in nebulous cloud, less than 1 wide, extending 10 SW from BD+394206 (8.8 mag)