Dolidze 13 (Lund 31) Open Cluster in Cassiopeia

Located at: RA 00 hours 50 minutes 00 seconds, Dec +64 degrees 08 minutes 00 seconds

Size: 12' (10') Magnitude: -- Class: IV 1 m

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:

Lumicon Red filter, 180 minutes (18 x 10 minute subs), 10/28/2008; seeing 2.2-2.8 FWHM per CCDStack

Processing:

CCDStack 1.3.7, 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 10 arc minutes. Noted in Comments: "Archinal: DSS shows approximately 10' diameter condensation of stars in Milky Way, just SW of HD 4776 (V = 5.373v, B9.5V+...)"