NGC 6755 (Lund 878, Cr 397) Open Cluster in Aquila

Located at: RA 19 hours 07 minutes 48 seconds, Dec +04 degrees 14 minutes 00 seconds

Size: 14' (15') Magnitude: 7.5 Class: II 2 r

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:

 Red (Hoya 25A) filter, 140 minutes (14 x 10 minute subs), 09/2/2006

Processing:

 CCDStack 1.1, Photoshop 7.0

Location:

 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 6755

NGC 6755 = Cr 397 = Lund 878 = OCL-96
19 07 49 +04 16.0
V = 7.5;  Size 15

17.5" (8/8/91): at 140x this is a bright group of 80 stars mag 10-14 in a 10' 
diameter.  The stars are arranged in two groups separated by a fairly wide, 
obvious dark rift oriented SW-NE.  The SE star group is larger and richer (about 
50 stars) and contains several stars in two rich subgroups.  A mag 10 star is at 
the W edge of the N group.

8": large, scattered, two parts are resolved into rich clumps.

- by Steve Gottlieb