Catadioptric telescope aperture 152 mm focal length 900 mm focal ratio 1125 optical system maksutov cassegrain suitable for beginners enthusiasts max useful magnification 300 x mount equatorial mount tripod steel tripod features red dot viewfinder coating aluminium series bresser messier finderscope 6x30 eye piece 125 eyepiece type super plssl included in delivery optical tube manual prism rail red dot finder finder scope