The Ultima 20-60x80mm offers a step up in aperture from the 65mm, offering 50% brighter images. The 80mm refractor features excellent multi-coated optics packed into a portable and durable refractor design and it comes standard with a 20-60x 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.
Specifications
| Magnification: | 20 - 60x |
| Objective Lens Diameter: | 80mm (3.15") |
| Eyepieces: | 8mm - 24mm (.31" - .94") |
| Angular Field of View: | 2.0° - 1.0° |
| Linear Field of View (@1000 yds) / @1000 m): | 105 ft (32 m) @ 20x| 53 ft (16.15 m) @ 60x |
| Focal Length: | 480mm (18.9") |
| Exit Pupil: | 4mm - 1.3mm (.15" - .05") |
| Eye Relief: | 18mm (.71") |
| Close Focus: | 26.2 ft (8 m) |
| Twilight Factor: | 69.2 - 40 |
| Relative Brightness: | 16 - 1.7 |
| Limiting Stellar Magnitude: | Ideal: 12.02 Moderate: 11.02 Poor: 10.02 |
| Lens Coatings: | Fully Multi-Coated |
| Prism Glass (Type): | BaK-4 |
| Prism Coatings: | FMC |
| Weight: | 57 oz (1616 g) |
| Environmental Protection: | Waterproof |
| Nitrogen Filled: | Yes |
| Tripod Adaptable: | Yes |
| Carrying Case: | Padded green woven nylon view-through |
| Camera Adaptable: | Yes |
| Dimensions: | 500mm x 90mm x 120mm (19.7" x 3.5" x 4.7") |
| Included Items: | Zoom eye piece with integrated T-adapter Carrying case Eyepiece lens cap Eyepiece Port cover Eyepiece carrying case Eyepiece pouch Lens cloth Instrument manual |
| Solar Warning |
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| العلامة التجارية | Celestron |