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About the Explore Scientific 24mm 82 Degree Series Waterproof Telescope Eyepiece - 2"...
Explore Scientific 82 Degree Series Telescope Eyepieces, with their 82 degree apparent field of view, immerses you in a very comfortable ultra-wide field that naturally promotes relaxation at the eyepiece. When you relax your eyes and take in the scene presented before you, it is much easier to observe for longer periods of time, and details begin to materialize that may not have become apparent to you at first glance. Another great benefit of ultra-wide eyepieces - like the Explore Scientific 82 Degree Series Telescope Eyepieces - is the ease with which you can gaze, not directly at an object, but slightly to either side. This skill, called using averted vision, is especially helpful when observing faint objects, because using averted vision puts the image on a part of your eye that is more sensitive to light, allowing you to see fainter images.
Explore Scientific 24mm 82 Degree Series Waterproof Telescope Eyepiece - 2" Features...
Optimized Optical Design: Explore 82 Degree Series ultra-wide eyepieces are optimized through each design, fabrication, and testing process to produce flat-field images that have high contrast and resolution.
Exotic Glass Combinations for Optimum Results: Eyepieces are constructed of 6 or 7 lens elements (depending on the focal length) that are fabricated from combinations of Dense Crown, Light Crown, Dense Flint, and Lanthanum optical glass.
Durable Coatings & Finishing Touches: Each element in your Explore Scientific 82 Degree eyepiece is fully multi-coated, resulting in bright, sharp images, and every element has blackened edges to reduce internal reflections and increase contrast.
Waterproof, Fog-Proof Housing: The internal optics of all 82 Degree Series eyepieces are housed in a gas-purged, waterproof barrel that keeps them as pristine as the day they were manufactured. Cleaning is much easier, and there is no need to worry about water or fluid becoming trapped in between elements due to rain, spills, heavy dew, or getting over-enthusiastic with lens cleaning fluid.
Tapered Barrel for Extra Security: The insert barrel of each eyepiece is double-tapered to allow smooth insertion to, and removal from, a telescope''s eyepiece holder or diagonal, however the wide dimension of the taper helps prevent the eyepiece from falling out of the telescope should the set-screw holding it in place become loose. The barrel (1.25" or 2", depending on the focal length) is threaded to accept standard screw-on filters.
- Optional Focal Extenders for Extra Magnification: Explore Scientific makes a wide variety of eyepiece focal lengths, allowing a change in magnification for just about any observational study you can think of. However, if you would like to get "double duty" out of the eyepieces in your accessory case, while still retaining the eye relief of that eyepiece, use Explore Scientific Focal Extenders.
Explore 24mm 82 Degree Series Waterproof Telescope Eyepiece - 2" Specifications...
Focal Length: 24mm
Barrel Size: 2"
Field of View: 82 degrees
Field Stop Diameter: 33.5mm
Eye Relief: 17.5mm
Dimensions: L=110mm x W=70mm
Weight: 704 grams; 24.8 ozExplore Scientific Product Number: EPWP8224-01