Refractor-Achromat

Celestron 80 LCM Refractor Optical Design: Refractor Aperture: 80mm (3.15") Focal Length: 900mm (35") Focal Ratio: f/11 Focal Length of Eyepiece 1: 25mm (0.98") Magnification of Eyepiece 1: 36x Focal Length of Eyepiece 2: 9mm (0...

Celestron AstroFi 90 Wi-Fi Refractor Optical Deisgn: Refractor Aperture: 90mm (3.54") Focal Length: 910mm (36") Focal Ratio: f/10.1 Focal Length of Eyepiece 1: 25mm (.98") Magnification of Eyepiece 1: 36x Focal Length of Eyepiece 2: 10mm (...

Celestron Omni XLT 102 Refractor Optical Tube Info:   Optical Design: Refractor Aperture: 102mm (4.02") Focal Length: 1000mm (39") Focal Ratio: f/9.8 Focal Length of Eyepiece 1: 25mm (0.98") Magnification of Eyepiece...