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The Ultima 80 mm features a 45° viewing angle and offers a step up in aperture from the 65mm, offering 50% brighter images. The 80 mm refractor features excellent multi-coated optics packed into a portable and durable refractor design and it comes standard with a 20 to 60x 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.
Optical Design | : | Refractor |
Aperture (mm) | : | 80 mm (3.15 in) |
Focal Length (mm) | : | 480 mm (19 in) |
Focal Ratio | : | 6 |
Angle | : | 45 ° |
Eyepiece 1 | : | 8 to 24 |
Zoom Magnification 1 | : | 20 to 60x |
Finderscope | : | Sighting tube |
Carrying Case | : | Soft Case |
Highest Useful Magnification | : | 189 x |
Lowest Useful Magnification | : | 11 x |
Limiting Stellar Magnitude | : | 12 |
Resolution (Rayleigh) | : | 1.74 arc seconds |
Resolution (Dawes) | : | 1.45 arc seconds |
Light Gathering Power (Compared to human eye) | : | 131 x |
Angular Field of View | : | 2° or 1° |
Linear Field of View (1000 yds) | : | 105ft 20x 53ft 60x |
Eye Relief | : | 18 mm 20x |
Near Focus | : | 27ft 20x |
Optical Coatings | : | Multi Coated |
Optical Tube Length | : | 16 in (406 mm) |
Weight (oz) | : | 57 oz (1616 g) |
Camera Adaptable | : | Built in T thread on Eyepiece |
Tripod Adaptable | : | Yes |
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