An Astro Physics 152 mm f7.5 EDF refractor. This scope has a 4" focuser on which is mounted a field flattener and a Pentax 6x7 Medium Format camera.The guide scope is a slightly customized Celestron 80 mm "First Scope". The focusing unit has been removed and a sturdier unit has been fitted, which has a "flip box" and ST-4 autoguider built into it.This is all mounted by way of a custom "ring" set up on Astro-Physics 1200 goto