[Orion]

Here are a few links Griffo...

http://members.tripod.com/denverastr...le/dspfile.htm
http://web.telia.com/~u41105032/Stepper/Stepper.htm
http://home.wanadoo.nl/jhm.vangastel/Astronomy/Poncet/e_index.htm
http://homepage.ntlworld.com/molyned...l_platform.htm
http://www.otterstedt.de/wiki/index....cet_Montierung