Hyperion Finetuning-Ring 14mm with 2" outer diameter
Hyperion Finetuning-Ring 14 (optical length 14 mm) - with 2" outer diameter !
Use the finetuning ring with one hyperion eyepiece and you get the function of four eyepieces.
The finetuning rings are 2" OD and threaded M48 (filter thread) on each end, so they can be installed in-between the Hyperion's removable front negative element and main body.
|Weight in Kg||0.15|