King 7 (Lund 121) Open Cluster in Perseus

Located at: RA 03 hours 59 minutes 10 seconds, Dec +51 degrees 46 minutes 48 seconds

Size: 5.0' (8.0') Magnitude: -- Class: I 2 r

North is up

West to the right

Telescope:

 8" f5 Newtonian reflector

Camera:

 ST-8XME, self-guided, binned 1x1, temp -15C & -20c, camera control MaxIm DL 4.56

Image:

Lumicon Red filter, 480 minutes (480 x 10 minute subs), 12/12/13/2010; seeing 2.1-3.2 FWHM per CCDStack

Processing:

CCDStack 2.17.3996.27523, 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 King 7 is 8.0 arc minutes.

From the CDS, the little nebulosity to the southeast (bottom edge) is GN 03.56.2