Baader Hyperion 2″ Finetuning Stopring

Hyperion 2\” Finetuning Stopring with brass clamping ring and 2 thumb screws.

Baaders Hyperion 2″ Finetuning Stop Ring, with internal brass compression ring, is an additional accessory for Baader Hyperion eyepieces. It is used when combining a Hyperion Eyepiece and a 2″ diagonal or prism and prevents the 1.25″ eyepiece barrel from hitting and damaging the internal components, especially whenever additional Finetuning Rings (#2958214 or #2958228) are lengthening the original eyepiece body.