What the heck is this for?

[Basara]

Hi all, had this in a box of mixed eyepieces I got off eBay a while ago and never figured out what it was for , what its meant to hold or where it scrwes onto.

Had a google around and cant find anything exactly like it other than guide-scope rings, which it clearly isn't.

[tooth_dr]

My guess is that it screws onto a focuser tube and holds 2” EPs. 

[Basara]

13 minutes ago, tooth_dr said:

My guess is that it screws onto a focuser tube and holds 2” EPs. 

Ah, so simple, both my scopes have 2" focusers with 1.25" inserts so I've never needed to use anything for 2" EPs

 

Thanks tooth_dr