I'm working on the Caldwell list now, and it's been a lot of fun - more fun than the Messier list. Of course, the Messier list has most of the showpiece objects for the northern hemisphere, but the Caldwell list is much more varied. It's got showpiece objects as well as dim ones that Patrick Moore picked for historical reasons. It's also more interesting if you take the time to do a bit of research on the objects before you view them because there's usually an interesting background to the object. A few are naked-eye like the Perseus Double Cluster, but there are 2-3 I haven't been able to find yet from Columbus in an 8".
Has anyone in our club gotten the Caldwell pin (there are objects in declination from +85 to -81 degrees, so you have to go to both hemispheres to do it)? I'd be very interested in how you did it. I was able to find Caldwell 87, which is a glob in Horologium, at -55 degrees and just 5 deg 40 min above the horizon at Columbus. There were tree branches in the field of view, so I sketched those as well! So I'm sure it's possible from Columbus to get the 70 objects that are required for a certificate. But I want see them all because the southern ones are the really cool stuff that we never get to see here, so I'm hoping to travel south at some point.
Anyone else working on this one? I've got 47 so far.
David Paul Green has done a really nice set of log sheets for the Caldwell list http://www.davidpaulgreen.com/tcol/TCOL_R1a.pdf
Steve