BAADER UFC VARILOCK 15-20mm ASIAIR so there are only four

so there are only four glass-air-surfaces

a top level accessory range and superior customer service for unsurpassed quality and experience

Concave elliptical primary + convex spherical secondary

long-term stability

finderscopes

BAADER UFC VARILOCK 15-20mm ASIAIR so there are only fourThe Baader UFC VariLock 15 20mm Extension attaches to either the camera or telescope side of the UFC Base #BA2459110 and allows for stepless fine tuning of backfocus distance between 15 20mm with the printed millimetre scale. Click here for instructions. The Baader UFC Universal Filter Changer is an incredibly versatile modular filter holder system with adapters for a wide range of telescopes and imaging trains, including the Celestron RASA series and