I've always had an interest in this lens, so went and built a scope just to check it out.
Going to put it up against my Chinese made Sky-watcher scopes. My 120mm f/8.3 and 150mm f/8 will be fitted with
a 100mmm aperture mask, really looking forward to the results.
Also got a Tak 102mm f/8 APO to add into the mix.
Here a couple of pictures, more pictures of the scope build and be found in the ATM forum.