The most compact model in our Ultima series spotting scopes, the 65mm refractor features a 45° viewing angle and excellent mulit-coated optics packed into a portable and durable refractor design and it comes standard with an 18-55x zoom eyepiece. This series was designed to perform well in a range of viewing situations, making it a great all-around optical instrument. You’ll love it for observing nature and long distance spotting and since it is completely waterproof you can feel comfortable using it in extreme weather. The green rubber optical tube allows for subtle observation in any nature environment. Ultima spotters are a great companion for any nature or outdoor enthusiast. Soft carrying case included. Specifications Magnification: 18 - 55x Objective Lens Diameter: 65mm (2.56") Eyepieces: 7mm - 21mm (.27" - .82") Angular Field of View: 1.7° - .73° Linear Field of View (@1000 yds) / @1000 m): 89 ft (27 m) @ 18x| 38 ft (11.58 m) @ 55x Focal Length: 382mm (15") Exit Pupil: 3.6mm - 1.1mm (.14" - .04") Eye Relief: 18mm (.71") Close Focus: 20 ft (6.1 m) Twilight Factor: 59.5 – 34.3 Relative Brightness: 12.6 – 1.2 Limiting Stellar Magnitude: Ideal: 11.56Moderate: 10.56Poor: 9.56 Lens Coatings: Fully Multi-Coated Prism Glass (Type): BaK-4 Prism Coatings: FMC Weight: 37 oz (1049 g) Environmental Protection: Waterproof Nitrogen Filled: Yes Tripod Adaptable: Yes Carrying Case: Padded green woven nylon view-through Camera Adaptable: Yes Dimensions: 390mm x 90mm x 130mm (15.3" x 3.5" x 5.1")
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