Celestron C90 Maksutov Cassegrain Spotting Scope

    Specifications Magnification: 39x (with included eyepiece) Objective Lens Diameter: 90mm (3.54") Eyepieces: 32mm Plössl (1.26") Angular Field of View: 1.3° with included eyepiece Linear Field of View (@1000 yds) / @1000 m): 68 ft (20.7 m) with included eyepiece Focal Length: 1250mm (49") Exit Pupil: 2.3mm (0.1") with included eyepiece Eye Relief: 20mm (.78") with included eyepiece Close Focus: 15 ft (4.6 m) with included eyepiece Twilight Factor: 59.2 with included eyepiece Relative Brightness: 5.3 with included eyepiece Lens Coatings: Multi-Coated Prism Glass (Type): BaK4 Prism Coatings: N/A Weight: 74 oz (2,100 g) Environmental Protection: Water Resistant Nitrogen Filled: No Tripod Adaptable: Yes Carrying Case: Black heavy woven nylon backpack Camera Adaptable: Yes Dimensions: 400mm x 260mm x260mm (15.7" x 10.2" x 10.2") with include eyepiece Included Items: Plössl 32mm eyepiece45° diagonal8x21 finderscopeObjective Lens CoverEyepiece Lens capBackpack Case Solar Warning Never look directly at the Sun with the naked eye or with this optic. Permanent and irreversible eye damage may result. Never use your optic to project an image of the Sun onto any surface. Internal heat build-up can damage the optic and any accessories attached to it. Never leave your optic unsupervised. Make sure an adult who is familiar with the correct operating procedures is with your optic at all times, especially when children are present. California Residents View Proposition 65 Warning   Software and Documentation C90 MAK Manual