I sell my big 12" Maksutov Rumak, Zen optical glass, full Made in Italy, you see an example the quality optical of Zen productor, on Rohr web forum.
Primary Schott Duran 50 of 320mm, meniscus BK7 of295mm F = 9000mm F30, linear C.O. only 48/295mm = 16%. (the c.o. of 16% is the theoretical limit between unobstructed and obstructed instruments).This is probably the only OTA in the world with these characteristics, optimized for CCD shooting and very high resolution visuals. On the secondary, there is a precise micrometric focuser, back focus is variable. The optical aluminum is in very good condition, no sign on the meniscus, primary and secondary. On the tube, ring and plate, are present normal but very small signs of use. The tube is in fiber, the weight including the accessories is 32 Kg (70,5 lb), dimension OTA 85 x 35 cm (33,7”x19”) are present three fans and a 12V control unit for electronics management (focuser, fans, various accessories). This OTA is considered for advanced and professional use, it does not have the optical certificate.
Accessories included in the offer:
aluminum rings and losmandy plate;
zero Image Shift-Electronic Micro-Focuser 2”;
push-button panel (control keyboard);
control unit 12V;
aluminum lens hood;
Specialized for Solar system hi-res, performance, like an 8 "-10" Apo refractor or higher, you have a big only opportunity.
Buyer pay shipment cost. Payment bank to bank or Paypal system but buyer adds 3%.