This diagoanl is probably the best investment I have done so far. The instant changing of magnification is really handy. Since a high quality 2″ diagonal with 97% transmission silver coating (dielectric coating available at $120 more), a SCT to 2″ adapter, 2″ to 1.25″ adapter and a dovetail connector is included in the package, S2 is really worth the price and is highly recommended for SCT users, especially those doing visual observing.
So far, I have only tested it under lousy skies condition. When either the reducer or multiplier arm is pushed into the end, the focus will be out for sure. So, you have to adjust the focus everytime when you switch the arm. There isn’t any clearance problem with my 8″ LX90. The only thing that I am worry about is the diagonal+eyepiece that weights around 1 kg. The DEC gear’s threads may be stripped.
I will only compare S2 and Meade stock diagonal when the sky is very good in condition. I don’t want the sky to be the limit during the comparison. However, these days are quite cloudy.
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