130 mm, 910 mm focal length apo triplet objective using an Ohara Fpl-53 center element. Lens is febricated in Russia to our specifications, edge blackened, mounted in a steel, thermally stable cell.
Tube Assembly
Fully baffled, 5.5" diameter main tube, 17” long.
Dewshield
6 3/16" diameter retracting dewshield 11" long.
Focuser
3.0" dual speed rotating Stellarvue focuser with 2" and 1.25" compression ring adapters. Threaded for field flattener.
Mounting Ring(s)
R130SET CNC machined hinged aluminum rings, five threaded 1/4-20 holes top and bottom. Holes are 1.5" & 60 mm apart and one is in the center.
Dimensions
Telescope is 32 1/2" long with dew shield retracted. With the extension and focuser unthreaded, the length is 22”.