Compression Ring 1.25" Visual Back for Short Tube 80's
This replaces the visual back on ST80 refractors from Synta, Vixen,
Orion, Celestron, Skywatcher, Antares, etc. Instead of thumbscrews
that scratch your diagonal, this unit uses a brass compression ring to
firmly grip the barrel. Precision machined for square and centered
alignment. Machined from aluminum, black anodized. From Mercury
Prices include shipping in the USA!