With #S2, the Power x Switch is an integrated device so your Denk does not need a Power x Switch attached to it. Your binoviewer or single eyepieces can be swapped at any time and the Power x Switch stays in the diagonal. We include an SCT thread-on visual back adapter with #S2. For SCTs that are smaller than 10", be sure to select the "Shorty" version so that the fork base will be cleared when you want to observe near zenith. For the 8" LX90, choose this diagonal (instead of #S1) even if single eyepieces-only are to be used as this scope has less clearance than typical 8" SCTs.

A special Dovetail Connector is also included for SCTs that may have less backfocus like the 14" Meade or the C9.25" by Celestron. Most SCTs tube assemblies vary in the amount of backfocus that they can deliver so it is impossible to predict with accuracy whether the focal reduction mode of #S2 will allow focus with a binoviewer. Almost all F/10 SCTs will reach focus without a problem, especially when the included Dovetail Connector is utilized. Reduction when using single eyepieces is a sure thing and requires much less backfocus.

Buy a Standard or Denk II Binoviewer and you will not only have a Binoviewing System that operates at three magnifications, but your single eyepieces will operate at three magnifications as well.