Telescope OTA's

Description The N20839 Newtonian with its large 208mm aperture and short 812mm focal length produces a fast, rich-field optical design perfect for...

Description Bresser Messier MC-100mm f/14 Maksutov-Cassegrain Optical Tube; 1400mm focal length; Red-Dot LED finder scope; 1.25" diagonal and 26mm...

Description The Explore Scientific AR152 Air-Spaced Doublet, is a classic air-spaced, crown-and-flint doublet achromatic refractor, and at 152mm (...