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The ED 100Sf is now available for the first time in the US. It is the big brother of our best selling ED80Sf. This APO refractor features high-grade glass and quality components. Coupled with a medium f/9.0 focal ratio, the ED "S" series provide a sharp, color-free image of high contrast. For the astronomer that wants the best value f or the dollar in a 4” APO, this is the one to get.TELESCOPE SPECIFICATIONS • Design: Refractor, ED Apochromatic • Objective Diameter: 1000mm • Focal Length: 900mm F/9 • Diagonal: 1.25” Star Flip Mirror • Includes Deluxe Metal Case • Finder Scope: 9 x 50 • Focuser: 2” ready Rack and Pinion • Built in Dew Shield • Includes Rings and Universal GP Dovetail to fit all Vixen and many other mounts • Weight: 8.2 lbs |