Amazing Celestron C90 Maksutov Telescope

The Maksutov optical design is recognized for being a portable design that is easy to use and has a variety of applications, making it an excellent choice for both terrestrial and astronomical usage. This C90 Mak has excellent optics with razor sharp images over a wide field. GENERAL FEATURES: • Multi Coated Optics • Maksutov-Cassegrain Optical Design • Compact and Portable Design • Erect Image System for Terrestrial and Astronomical Use • Built-in T-Adapter threads for Ease of Adapting SLR Cameras • Comes with 32 mm Eyepiece, 45° Erect Image Diagonal and 8x21 Erect Image Finderscope • Backpack Made of Nylon SPECIFICATIONS: OPTICAL DESIGN : Maksutov APERTURE : 90 mm (3.54 in) FOCAL LENGTH : 1250 mm (49.21 in) FOCAL RATIO : 13.89 FINDERSCOPE : 8x21 ANGLE : 0 or 45 ° EYEPIECE 1 : 32 mm (1.26 in) MAGNIFICATION 1 : 39 x CARRYING CASE : Backpack made of nylon ANGULAR FIELD OF VIEW : 1.3 ° LINEAR FIELD OF VIEW (@1000 yds) : 68 ft (20.73 m) LINEAR FIELD OF VIEW (@1000 m) : 23 m (75.46 ft) EYE RELIEF : 20 mm (0.79 in) OPTICAL COATINGS : Multi-Coated TRIPOD ADAPTABLE : Yes CAMERA ADAPTABLE : Optional T-Adapter OPTICAL TUBE LENGTH : 16 in (406.4 mm) WEIGHT : 5 lb (2.27 kg)