Celestron Astro Master 130 Eq

Optical Design: Newtonian Reflector
Aperture: 130mm (5.11″)
Focal Length: 650mm (25.6″)
Focal Ratio: f/5
Focal Length of Eyepiece 1: 20mm (.78″) with built-in erect image corrector
Magnification of Eyepiece 1: 33x
Focal Length of Eyepiece 2: 10mm (.4″) standard
Magnification of Eyepiece 2: 65x
Barlow Lens: Not Included
Finderscope: Built-on StarPointer™ red dot finderscope
Star Diagonal: None
Optical Tube: Aluminum
Highest Useful Magnification: 307x
Lowest Useful Magnification: 19x
Limiting Stellar Magnitude: 13.1
Resolution (Rayleigh): 1.07 arc seconds
Resolution (Dawes): .89 arc seconds
Light Gathering Power (Compared to human eye): 345x
Secondary Mirror Obstruction: 44mm (1.73″)
Secondary Mirror Obstruction by Diameter: 34%
Secondary Mirror Obstruction by Area: 11%
Optical Coatings: Glass mirrors coated with aluminum and SiO₂
Optical Tube Length: 552mm (21.7″)
Optical Tube Diameter: 160.5mm (6.32″)
Optical Tube Weight: 7.7 lbs (3.5 kg)
Dovetail: CG-5 Dovetail bar