Refractor-Achromat

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...

Sky-Watcher StarTravel 102 AZ3   102mm achromatic refractor 500mm (f/4.9) Manual alt-az mount (AZ3) Accessory tray Fine motion control knobs Adjustable aluminum tripod 25mm and 10mm 1.25" Super eyepieces 1.25" erect 45 degree image diagonal 2" Rack...

Sky-Watcher StarTravel 120 AZ3 This Sky-Watcher 120mm (4") f/5 telescope is a two-element, air-spaced, fully multi-coated objective, achromatic refractor, which can give exciting "rich field" astronomical views. It can provide excellent vistas of star...