User manual CELESTRON NAUTICA 7X50CF Product Brochure

[. . . ] [. . . ] All are rubber covered to protect against rough handling. All provide maximum optical performance with BAK-4 prisms and multi-coatings for sharp images with high contrast and resolution. Each model has a large, 50mm objective lens to offer maximum image brightness even in low light conditions, like dusk and dawn. F E AT U R E S 7 x 50 CF Center Focus · Smooth center focus wheel · Easy-to-grip, large objective diopter ring for smooth and more precise focusing · Attached objective caps, so they won't be lost at sea · Completely waterproof - dry nitrogen charged and sealed with internal O-rings to prevent internal fogging - unaffected by climate and temperature changes · Water resistant, Nylon carrying case · Tripod adapter fitting for tripod mounting Model 71187 7 x 50 CF Model 71188 7 x 50 IF 7 x 50 IF/RC Reticle/Compass · Backlit illuminated liquid dampened magnetic compass - excellent navigational tool for land or sea · Horizontal and vertical etched reticle to help determine relative size of objects · Rangefinding dial calculates actual object distance or size · Completely waterproof - dry nitrogen charged and sealed with internal O-rings to prevent internal fogging - unaffected by climate and temperature changes · Individual eyepiece focus with diopter scale for quick and accurate focusing · Excellent depth of field for minimal focus adjustments · Nautical style padded canvas case and straps · Attached objective caps, so they won't be lost at sea · Tripod adapter fitting for tripod mounting 7 x 50 IF Independent Focus · Completely waterproof - dry nitrogen charged and sealed with internal O-rings to prevent internal fogging - unaffected by climate and temperature changes · Individual eyepiece focus with diopter scale for quick and accurate focusing · Excellent depth of field for minimal focus adjustments · Nautical style padded canvas case and straps · Attached objective caps, so they won't be lost at sea · Tripod adapter fitting for tripod mounting Model 71189 7 x 50 IF/RC S P E C I F I C AT I O N S Model Size Design Prisms Coating Weatherproof Angular Field of View (FOV°) Linear FOV (ft @ 1000 yd) Exit Pupil (mm) Eye Relief (mm) Near Focus (ft) Weight (oz) 71187 7 x 50 CF Porro BAK-4 Multi-Coated Waterproof 7 367 7. 1 24 25 40 71188 7 x 50 IF Porro BAK-4 Multi-Coated Waterproof 7 367 7. 1 26 18 35 71189 7 x 50 IF/RC Porro BAK-4 Multi-Coated Waterproof 7 367 7. 1 26 18 38 The Nautica Model 71189 features a rangefinder scale with backlit compass Tel 310. 328. 9560 | Fax 310. 312. 5835 | 2835 Columbia Street, Torrance, CA 90503 U. S. A. | www. celestron. com ©2003 Celestron [. . . ] [. . . ]