Baader 2" Clicklock Eyepiece Clamp for Standard SCT Threads - CLSC-2 21mm but even from a moving

but even from a moving driving car or a boat

It provides a superior viewing alternative to many compact or pocket size binoculars

Tele Vue 55mm Plossl Eyepieces

1:1 Magnification

Baader 2" Clicklock Eyepiece Clamp for Standard SCT Threads - CLSC-2 21mm but even from a movingThis Baader 2" Clicklock Eyepiece Clamp mounts directly to the standard rear cell threads on all popular SC telescopes. Once installed, simply insert a 2" eyepiece or other accessory and lightly twist the Clicklock's rubber knurled outer collar to lock it securely in place. To change out an eyepiece, just twist the outer collar in the opposite direction, remove the eyepiece, and insert a new one. It is super easy and fast! Amateur astronomers love the