A 60mm department store refractor started it all....
SharpStar 65EDQ (same as AT65EDQ) 9.25" Homemade dobsonian with 1/13 wave self-made mirror. AT6RC/Celestron ASGT http://www.astrobin.com/users/tyblakesley/
Quote:Ok let’s do something more simple, dose the SIPS change the focus point? Will I need to add or minus distance from secondary by adding the SIPS? Or am I correct in assuming the SIPS just moves it out so everything will come to focus as if the SIPS was not installed. Never had a paricor before or SIPS so I just do not know. Hope fethertouch sends info on this part if I get no answers here.
20 inch f8 Chief Ed Jones designed and a 17 f9 Zanbuto Wide Band Chief Mike Jones designed .Both unobstructed telescopes .