Could anyone with an Ioptron or Astro-Tech 6" or 8" f/12 MKT measure me the o.d. thread diameter on the focuser port and post the mm or SAI size? I would like to reduce from the 57mm male portal thread on a Bosma 200mm to standard SCT 2" thread for a SCT-thread Crayford focuser. I believe Bosma made the units sold under Ioptron and A-T brands and used the same portal threads on both the 150mm and 200mm. Can anyone confirm?
=Thanks in advance.
Edited by WeltevredenKaroo, 22 August 2014 - 12:23 PM.