Hello all, I'm looking at adding some setting circles to my Dobsonian. The azimuth circle will be easy to handle on the base. I have found sites that allow you to print out whatever size you need. But the altitude scale seems to be more of a problem. I can use an inclinometer to tell me the angle of my scope. A simple math problem and I would have my Dec. But, this will only work if the scope is directly pointing north or south. When the scope is pointing to an object that isn't directly north or south, then the math gets a bit harder. I have seen digital setting circles, but those seem to start at $500. Is there a better way to handle setting circles, especially the altitude, on a Dobsonian? Thanks. -- ++++++++++++++++++ Troy Davidson