IC 4665 – Open Cluster

IC 4665 - Open Cluster by Bob Franke, Chino Valley, AZ, USA. Equipment: Takahashi FSQ-106ED, SBIG STF-8300M, Baader RGB filters, Losmandy G11 mount

Bob Franke

Chino Valley, AZ USA

Takahashi FSQ-106ED scope
SBIG STF-8300M camera
Baader RGB filters
Losmandy G11 mount

IC 4665 is an open cluster in the constellation Ophiuchus. Philippe Loys de Chéseaux discovered it in 1745. At a distance of 1,100 to 1,400 light years, IC 4665 is approaching us at 12 km/sec. The cluster’s very young age, about 35 million years, accounts for the beautiful blue hot stars.

Exposure Info
Red 210 min.
Green 259 min
Blue 399 min.