IC 1311 (Lund 928, Cr 414) and B 342 (LDN 885) Open Cluster and Dark Nebula in Cygnus

Center of field at approximately: RA 20 hours 10 minutes 05 seconds, Dec +41 degrees 09 minutes 56 seconds

Size: 9.0' (5.0) and 4.0' Magnitude: 13.1 and -- Class: I 1 r n and (3 Ir?)

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, 240 minutes (24 x 10 minute subs), 09/24/25/2007

Processing:

CCDStack 1.3, Photoshop 7.0

Location:

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

Notes: This field in Cygnus is about 2.5 degrees NNW from Sadar (Gamma Cygni), the 'heart of the cross (of the swan)'. Central Cygnus is laced with nebulosity, a small part seen to the east (left) of IC 1311. Several patches of 'darkness' are named by E. E. Barnard in this area, with B 342 seen just 14 minutes to the west (right) of IC 1311. Also, forming an equilateral triangle (to the north) with IC 1311 and B 342, is the Open Cluster Dolidze 2 (10', mag --, Cl: IV 1 p n), at the top edge of the field.  According to "Star Clusters", by Brent Archinal and Steven Hynes, the open cluster IC 1311 is 5.0 arc minutes in size.

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

342
α(2000)20h 09m 31s, δ(2000) +41 12
Galactic Coordinates 78,+4
 Small, dark marking, 4 E and W

 

From the NGC / IC Project:

NO Contemporary Visual Observation(s) for IC 1311