Thanks.
I use a 10 inch f5.6 Newtonian, made by Astro Optical Supplies back in 1986, on a "Sampson" GEM mount also made by AOS. Those were the days where cutting edge gear (at the time) was made here in Australia. Here is the beast in all its glory
http://www.users.on.net/~josiah/focuser/IMG_9932.jpg
Scott