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: 11.56 Moderate: 10.56 Poor: 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: 400mm x 90mm x 120mm (15.7″ x 3.5″ x 4.7″) Included Items: Zoom eye piece Carrying case Eyepiece lens cap Eyepiece Port cover T-adapter Eyepiece carrying case Eyepiece pouch Lens cloth Instrument manual 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. Videos Support Documents Celestron Ultima Spotting Scopes Manual
