On 27 Jun 2007, at 17:24, Wayne Sumner wrote:
I've read the pro's and con's of domes vs roll-off roofs, but the Davis School District building department doesn't build domes...
Just as well. There's a reason the old dome at SPOC is now just for show (it was a pain in the neck).
I'd be especially interested in hearing from those who have recent experience with the SLAS roll-off roof observatory.
Use V groove wheels and angle iron tracks. I started out with "normal" wheels and tracks on my first roll off but after seeing the ones used at SPOC I switched. Here's a picture of one of the wheel trolleys on SPOC's Harmon's Observatory (same style were used on the Refractor House). http://www.slas.us/patrick2/slas/patrickw//PATRICKW186.JPG pw