B 57 (LDN 11) Dark Nebula in Ophiuchus

Located at: RA 17 hours 08 minutes 24 seconds, Dec -22 degrees 50 minutes 00 seconds

Size: 5.0' Magnitude: -- Class: 6 E G

North is up

West to the right

Telescope:

8" f5 Newtonian reflector

Camera:

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

Image:

Lumicon Deep Sky filter, 230 minutes (23 x 10 minute subs), 08/9/10/2007

Processing:

CCDStack 1.2, Photoshop 7.0

Location:

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

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

 

57
α(2000)17h 08m 22s, δ(2000) -22 51
Galactic Coordinates 1,+10
 Diam. 5, elongated NE and SW