B 170 (LDN 1149) and B 171 (LDN 1153) Dark Nebulae in Cepheus
Center of field at approximately: RA 21 hours 59 minutes 33 seconds, +58 degrees 56 minutes 08 seconds
Size: 26' x 4.0' and 19' Magnitude: -- and -- Class: 5 Ir and 5 Ir
North is up
West to the right
8" f5 Newtonian reflector
ST-8XME, self-guided, binned 1x1, temp -15c, camera control MaxIm DL 4.56
Lumicon Red filter, 860 minutes (86 x 10 minute subs), 07/25/27/28/29/30/31/2009; seeing 2.4-3.0 FWHM per CCDStack
CCDStack 188.8.131.52, 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 170 is to the west of center (right), and B 171 is to the east (left) of center. All three of the fields I imaged were taken mostly in heavy moonlight. See B 173 and B 174 taken during this moon period.
The CDS lists the position of B 170 as 21h 57m 35.9s, +59d 07m 00s ... around the star at the upper right of my image.
These description from the on-line Edward Emerson Barnard "A Photographic Atlas of Selected Region of the Milky Way":
My centering seems to agree with the on-line Chart from Plate 49 ...
From this image on, I will present the native resolution of the ST8 (1530 x 1020 pixels), and a reduced size 1024 pixel width version