B 23 (LDN 1503) Dark Nebula in Taurus

Located at: 04 hours 40 minutes 36 seconds, Dec +29 degrees 53 minutes 00 seconds

Size: 5.0' Magnitude: -- Class: 6 Ir (5 C?)

North is up

West to the right


 14.5" f5 Newtonian reflector


 ST-8XME, self-guided, binned 1x1, temp -15 c & -25c, camera control MaxIm DL 4.56


Lumicon Red filter, 760 minutes (76 x 10 minute subs), 12/22/23/24/25/2014; seeing 2.0-4.9 FWHM per CCDStack


CCDStack 2.84.5400.22239, Photoshop CS5.1


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

Notes: Finally had some clear weather this December... but the off-shore winds (Santa Ana's) were blowing, making the seeing poor (except for one partial night). See the 8" version.

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


α(2000)4h 40m 32s, δ(2000) +29 54
Galactic Coordinates 171, -11
 Diam. 5, sharply pointed to the SE, BD+29728 (6.5 mag) in N part