Celestron C70 Mini MAK Brand New Includes Limited Lifetime Warranty The Celestron 52238 C70 Mini Mak Spotting Scope is a powerful Maksutov-Cassegrain type scope that features a Maksutov optical design with multi-coated optics. The C70 Mini Mak is recognized for being compact, easy to use, and applicable for both terrestrial land and astronomical operation. In addition, the C70 spotting scope includes a built-in zoom eyepiece capable of 90x magnification and a tabletop tripod which has built-in slow motion control. 52238 Features Product # 52238 Mini Mak Spotting Scope Maksutov-Cassegrain Optical Design Multi-Coated Optics Zoom Upto 75x 45 Eyepiece 1.25 Eyepiece Adapter Tabletop Tripod Specifications Optical Design Maksutov-Cassegrain Aperture 70mm 2.76 in Focal Length mm 750 mm 30 in Focal Ratio 11 Magnification 1 25x 75x Highest Useful Magnification 165x Lowest Useful Magnification 10x Limiting Stellar Magnitude 11.7 Resolution Rayleigh 1.99 Arc Seconds Resolution Dawes 1.66 Arc Seconds Light Gathering Power 100x Angular Field of View 1.3 7 Linear Field of View 1000 yds 68ft 25x, 35ft 75x Eye Relief mm 22mm 25x Near Focus 16ft 25x Optical Coatings Multi Coated Optical Tube Length 11 in 279 mm Includes Soft Carrying Case