Longer counterweight bar or more counterweights.
Posted 02 May 2011 - 12:40 PM
Anyone know where I can get reasonably priced counterweights?
Posted 02 May 2011 - 12:53 PM
I'm no expert, but that's my 2 cents.
Posted 02 May 2011 - 06:47 PM
To answer the OP's first question, a longer bar would allow you to use your existing weights more efficiently, but you need to be aware of any mount swing clearances that may come into play with extreme positions.
Posted 03 May 2011 - 12:11 AM
Posted 03 May 2011 - 08:04 AM
I would think vibration could creep in with a longer shaft.
You're right, Mary; it does. I've tested this with my G11 (when I had it), my CGE and my LXD650. In all tests, I balanced perfectly with one weight at the extreme end of the counterweight shaft and then tested damping time at high power following a light tap on the focuser. I then balanced perfectly using two weights considerably closer to the fulcrum and tested again. With all three mounts, the damping time was noticeably less with two weights closer to the mount head. As far as I'm concerned, that proved the point for me. I'm now stuck with carrying more counterweights.
Posted 03 May 2011 - 08:54 AM