Astromania 2" 45-Degree Erecting Prism Diagonal - Bundle with - Off-Axis Guider with Micro-Focusing for Successful Astronomy Photos Without A Guide Scope
For refractors scs maks and rc telescopes; off-axis guider only 24mm in overall length; robust yet light 5.45mm optical transmission full illumination; micro focusing especially smooth helical focusing with 0.05mm accuracy; 75mm of back focus
Easy to connect: off-axis guider has an M48 thread on telescope side and an additional socket for 2 inch eyepiece; with three screws and a flat M48 adapter for connecting camera; rotate camera and find optimum orientation for astronomical object exposing
Exact micro focusing with 10mm travel; small prism directs light into control unit of guider into 1.25 inch helical focuser; generous 10mm of travel allows to find optimum sharpness for guide star; special helical focuser adjust to 0.05mm use fine scale
Image erecting BAK4 prism with anti reflection coating; High accuracy and high light reflection prism; Internally matte blackened and threaded for no internal stray light reflection; 1.25 inch adapter with brass compression ring included
Entirely aluminum black anodized with smooth finish; if there is any problem of focusing due to the light path for a few telescopes; please feel free to contact us for help