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Do you have a preference for binocular body design i.e. roof prism - one piece body slimmer whole, Zeiss/German - OG LENS turrets screwed onto porro prism body, Baush and Lomb/US - single body for porro prisms and OG lenses?
There are for the latter two mixed designs, especially as bins get bigger. Not sure what design the giants use.
And do you have any preference for individual eye piece focusing or central focusing (with a single eye diopter adjustment)?
This is an unusual combination. I bought a Denkmeier PowerSwitch on a 2" WO diagonal (if I remember correctly). The diagonal was not in brilliant shape, and I wanted to be able to use my Baader Zeiss T2 prism with it, so I removed the diagonal, fitted a T2 Adaptor and there you have it.
PLEASE NOTE The Zeiss prism is excellent, but does have some slight damage to the coatings. On one side, an eyepiece barrel contacted the surface and left a ring which is obviously ring on the limit of a 1.25" fov. On the other, there is a slight mark. Neither of these are visible in use, or have the slightest effect on viewing quality but I need to point them out. Overall these prisms are excellent for high power viewing and seem to have the edge over even top line mirror diagonals. In my experience the image holds up better under higher power.
The PowerSwitch has a reducer and multiplier selection, and is very handy. I used it a fair amount for solar observing with good success.
Difficult to price. Let's say £75 for each part so £150 total collected at SGL11 or £160 posted. Note that it also includes a Baader variable extension tube which is in itself worth something.
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