Refractor Telescope

Specifications Optical Tube Info Optical Design: Refractor Aperture: 150mm (6") Focal Length: 1200mm (47") Focal Ratio: f/8 Focal Length of Eyepiece 1: 20mm (.8") Magnification of Eyepiece 1: 60x Finderscope: 9x50 Star Diagonal: 1.25" Star Diagonal Optical Tube: Aluminum Highest Useful Magnification: 354x Lowest Useful Magnification: 21x Limiting Stellar Magnitude: 13.4 Resolution (Rayleigh): .93 arc seconds Resolution (Dawes): .77 arc seconds Light Gathering Power (Compared to human eye): 459x Secondary Mirror Obstruction: None Secondary Mirror Obstruction by Diameter: None Secondary Mirror Obstruction by Area: None Optical Coatings: Fully Coated Optical Tube Length: 1295mm (51") Optical Tube Diameter: 171.45mm (6.75") Optical Tube Weight: 19 lbs (8.62 kg) Dovetail: CG-5 Dovetail bar