Baader Bracket, and for all Vixen-style finderscope mount basesStandard base viewfinder mounting Pairing MQR III, IV MQR, SkySurfer 5 for mounting on the "second telescope" and for all Vixen style finderscope mount bases The Baader standard basis is milled from solid (no cheaper casting), adjusts all Tubusradien and can be with two screws in the slots but also with a single screw in the center absolutely firmly attach. The base plate is milled sinusoidal and forms on each tube radius 130 400 mm diameter two