B 173 (LDN 1164) and LDN 1166 Dark Nebulae in Cepheus

Center of field at approximately: RA 22 hours 06 minutes 22 seconds, Dec +59 degrees 38 minutes 27 seconds

Size: 4.0' and ~2.0' Magnitude: -- and -- Class: 6 Ir and (6 Ir?)

North is up

West to the right


 8" f5 Newtonian reflector


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


Lumicon Red filter, 710 minutes  (71 x 10 minute subs), 08/7/8/9/2009; seeing 2.3-3.2 FWHM per CCDStack


CCDStack, Photoshop 7.0


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


These dark nebulae are two of several dark patches just north and east of IC 1396.

B 173 is to the east of center (left), and LDN 1166 to the west (right) of center. In my image, the smaller LDN 1166 is more prominent (denser cloud), but Barnard did not catalogue it.

All three of the fields I imaged were taken mostly in heavy moonlight. See B 170 / 171 and B 174 taken during this moon period. B 173 is about 33 minutes north of B 174.

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

α(2000)22h 07m 28s, δ(2000) +59 40
Galactic Coordinates 104,+3
 Diam. 4, rather definite, a small star on N edge and one on SW edge