Filter Thread Eyepiece Barrel Extensions
For eyepieces that need to be extended out a bit to reach focus, a
common problem with Newtonians. These extensions screw into the
eyepiece barrel filter threads and extend the barrel. The extensions
are also threaded for filters. Machined from aluminum, anodized black.
Parfocalizing rings can be used as an insertion stop, sold separately.
Eyepiece and filter not included.
2" version shown with a filter installed:
Price includes shipping in the USA!
Parfocalizing Rings are here!