IC 4665 is not an exciting open cluster, but it is an interesting one. It is a 4.2 visual Mag cluster spanning 70 arc minutes of sky. Yet it not only does not make Messier's catalog, but it does not make Herschel's / Dreyer's NGC. One reason (speculation) given is that it is a large, coarse cluster and not recognized as an object by the early astronomers.
I took a quick shot of it awhile back. Image and exposure / processing details are here:
http://www.jthommes.com/Astro/IC4665.htm
Scope: Zenithstar 66 mm APO
Camera: Artemis285 (Edmund Optics RGB's)
Mount : CG5 GOTO (Celestron ASGT)
Guiding: Homemade 180 mm FL guide scope, DSI pro, PhD Guiding
I took a quick shot of it awhile back. Image and exposure / processing details are here:
http://www.jthommes.com/Astro/IC4665.htm
Scope: Zenithstar 66 mm APO
Camera: Artemis285 (Edmund Optics RGB's)
Mount : CG5 GOTO (Celestron ASGT)
Guiding: Homemade 180 mm FL guide scope, DSI pro, PhD Guiding
Jim Thommes
Mak-Newt 152 mm
C8
Megrez II APO
Zenithstar 66 mm APO
G11/Gemini
ST8300M
Artemis285 Camera
Canon 350D DSLR
http://jthommes.com/Astro/
