Features precise helical focus adjustment with convenient thumbscrew focus lock
Compact and with a built-in helical focuser for precise focusing of potential guide stars
UNC(1/4-20)-mount equipped for secure threaded attachment of autoguide devices
Ensures that main mirror accurately tracks the celestial body to be observed and matches perfectly with today's sensitive autoguiding cameras for easy guide star acquisition
Need extension tube for extra focal length to use with eyepiece