NGC 7128 (Lund 998, Cr 440) Open Cluster in Cygnus

Located at: RA 21 hours 44 minutes 00 seconds, Dec +53 degrees 43 minutes 00 seconds

Size: 3.1' (4.0') Magnitude: 9.7 Class: I 3 m

North is up

West to the right

Telescope:

8" f5 Newtonian reflector

Camera:

 ST-8XME, self-guided, binned 1x1, temp -20c, camera control MaxIm DL 4.56

Image:

Lumicon Deep Sky filter, 150 minutes (15 x 10 minute subs), 10/5/2007

Processing:

CCDStack 1.3, 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 4.0 arc minutes.

From the NGC / IC Project:

Contemporary Visual Observation(s) for NGC 7128

NGC 7128 = Cr 440 = Lund 998 = OCL-218
21 43 57 +53 42.9
V = 9.7;  Size 3

17.5": 22 stars mag 11-13 in rich and compact 2.5' region.  Most stars are 
arranged in oval ring NW-SE.  A mag 11.5 star at the E edge has several very 
faint companions.  Two mag 11 stars are on the south side.  A double star mag 
12/12 is on the west side as well as a few other double stars.  A string of 
stars oriented SW-NE is just NW of the oval ring.

8": 15 faint stars, small, rich, over background haze, two mag 11 stars are at 
the S edge.

- by Steve Gottlieb