Orion 100 ED, Apo Refractor Telescope Optical Tube with 100mm Aperture, 900mm Focal Length

The Orion 100 ED Apo Refractor Telescope Optical Tube delivers images remarkably free of chromatic aberration, thanks to its fully multi-coated 100mm objective doublet. It's crafted with one element of FPL-53 extra-low dispersion ED optical glass from Japan. The 100mm aperture gives it 56% greater light grasp than the ED80 and the 900mm focal length (f/9.0) is ideal for visual planetary and lunar study and excels for imaging work as well.

The baffled, 36"-long aluminum tube is outfitted with a 2" Crayford-style focuser for exceptionally smooth focusing with no backlash. It accepts both 2" and 1.25" diagonals. A molded-in dovetail base accepts any Orion finder scope.