Dolidze 1 (Lund 923, OCL-153) Open Cluster in Cygnus

Located at: RA 20 hours 08 minutes 12 seconds, Dec +36 degrees 33 minutes 00 seconds

Size: 5.0' (6.0') Magnitude: -- Class: IV 2 p n

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 Deep Sky filter, 120 minutes (12 x 10 minute subs), 08/19/2007

Processing:

CCDStack 1.2, Photoshop 7.0

Location:

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

Notes: This is one of those "where is it clusters?"! Dolidze 1 is centered in this image, see just under the centered bright star in the upper middle, and to the east (left), and even with the bright star at the west (right). According to "Star Clusters", by Brent Archinal and Steven Hynes,  the size of this open cluster is 6.0 arc minutes. Description is "Archinal: Id? Mostly E-W scattering of brighter stars in rich Milky Way field". The "n" in the classification is for faint tendrils of nebulosity that pervades the entire central Cygnus area, some of which can be seen in this rather short exposure