90 Degree Polar Scope Adapter
This is a custom machined 90 degree polar scope adapter for a Losmandy polar scope
Vintage Pentax 90 Degree Viewfinder
Picked this up on eBay for $12.05 with the intention of using it to adapt the polar scope for my Star Tracker:
Losmandy Polar Scope & 90 Degree Adapter
Here's the adapter assembled to the polar scope.
90 Degree Adapter & Losmandy Polar Scope
Here's the complete assembly of the Losmandy Polar Scope, the machined adapter and the Pentax 90 degree adapter.