NGC 6819 (Lund 900, Cr 403) Open Cluster in Cygnus

Located at: RA 19 hours 41 minutes 16 seconds, Dec +40 degrees 11 minutes 32 seconds

Size: 5.0' Magnitude: 7.3 Class: I 1 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 4.54

Image:

 Red (Hoya 25A) filter, 100 minutes (10 x 10 minute subs), 08/5/2006

Processing:

CCDStack 1.1, Photoshop 7.0

Location:

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

Notes: From the NGC / IC Project:

Contemporary Visual Observation(s) for NGC 6819

NGC 6819 = Cr 403 = Mel 223 = Lund 900
19 41 18.1 +40 11 12
V = 7.3;  Size 5

17.5" (7/1/00): this is a rich, beautiful cluster at 100x.  The central 6' 
contains 80-90 stars over unresolved haze and has an irregular outline with the 
brighter stars forming a squared off "U" shape open to the north.  The cluster 
extends to ~8' diameter with many faint stars on the SW side.  The outline 
appears elongated SW-NE with the inner bars of the "U" on the NE border 
delineating a distinct border.

13": over 40 stars resolved at 166x including two intersecting strings.  
Striking very rich group situated in a rich star field.  A mag 10 star is off 
the SW end and several bright stars are in the field at low power.

8": rich, well-resolved, pretty.

- by Steve Gottlieb