B 238 (LDN 1759) Dark Nebula in Ophiuchus

Located at: RA 16 hours 52 minutes 24 seconds, Dec -23 degrees 08 minutes 00 seconds

Size: 13' Magnitude: -- Class: 6 Ir

North is up

West to the right

Telescope:

8" f5 Newtonian reflector

Camera:

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

Image:

Lumicon Red filter, 290 minutes (29 x 10 minute subs), 08/19/20/21/2008; seeing 2.3-2.8 FWHM per CCDStack

Processing:

CCDStack 1.3.7, 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":

 
238
α(2000)16h 52m 21s, δ(2000) -23 08
Galactic Coordinates 358,+13
 Irregular, diam. 13, BD-224232 (8.0 mag) on NW edge