NGC 6866 (Lund 917, Cr 412) Open Cluster in Cygnus

Located at: RA 20 hours 03 minutes 56 seconds, Dec +44 degrees 09 minutes 36 seconds

Size: 10' (15') Magnitude: 7.6 Class: II 2 r

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 Deep Sky filter, 160 minutes (16 x 10 minute subs), 07/27/2007


CCDStack 1.2, Photoshop 7.0


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

Notes: According to "Star Clusters", by Brent Archinal and Steven Hynes, the size of this open cluster is 15 arc minutes.

From the NGC / IC Project:

Contemporary Visual Observation(s) for NGC 6866

NGC 6866 = Cr 412 = Mel 229 = Lund 917
20 03 55 +44 09.5
V = 7.6;  Size 7

17.5": about 100 stars in a 20'x10' region are visible at 100x.  Appears rich 
and very appealing.  The main string is very elongated roughly E-W and contains 
a brighter intersecting subgroup 8'x2' NW-SE of about 45 stars with a close 
triple star on the NW end consisting of a mag 10 star and two very faint 
companions.  Two mag 10-10.5 stars are at the SE end of this string.  The 
western end of the main string curves north into a nice semi-circle.

- by Steve Gottlieb