Telescope Reviews: Baader Maxbright's glasspath options

Whichever 2" diagonal you have and use now will be fine for your lone 2" eyepieces, or that Clicklock diagonal too. BUT like the others I suggest you get the T2 prism diagonal for your binos, they were MADE for those binos and you will get the precious backfocus you need without having to cut the tube. Many prism diagonals have problems but the Zeiss is not one of them, rest assured the quality is first rate. I use my T2 prism often with my 1.25" planetary orthos, it is that good. It's not by coincidence that the T2 prism has been included as part of the package for the MkV binos and they are considered the top of the line. Make sure you get the 2" nosepiece, but I would not worry about getting a 2" Clicklock because a) many widefield eyepieces will vignette in a 1.25" diagonal, and b) the 2" Clicklock has a wide bottom that overhangs the small T2 body and you may not be able to get the diagonal to seat all the way into the refractor. Check the photo, this is a big 2" Clicklock adapter screwed directly onto a T2 prism, you can see the overhang and the potential problems seating the diagonal.

Oh another thing you need to know is to get the 2" Clicklock to attach to the T2 diagonal you need an "expanding ring" to take the Clicklock threads from SCT to T2. T2 is only 44mm so the expanding ring actually constricts the aperture below 2" so it's not really a 2" Clicklock in this configuration anyway.