The A80Mf is an Achromatic Refractor with 80mm (3.2”) of aperture. Its focal length is 910mm (3 ft.) with an f ratio of 11.4. Its light gathering is...
The A80Mf is an Achromatic Refractor with 80mm (3.2”) of aperture. Its focal length is 910mm (3 ft.) with an f ratio of 11.4. Its light gathering is...
The remarkably fast 200mm (8) f/4 parabolic primary mirror of the Vixen R200SS Newtonian reflector gives extremely sharp images with no chromatic aber...
