OTA · 2006– Vixen VMC110L Vixen Optics · VMC110L Key specifications Aperture110 mm Focal length1035 mm Focal ratiof/9.4 Optical designMaksutov-Cassegrain Weight1.9 kg About 110mm f/9.4 VMC modified Maksutov-Cassegrain catadioptric; compact open-tube planetary scope.