Explore Scientific 82deg Series Argon-Purged Waterproof Eyepiece Kit, Includes 6.7mm, 11mm, 18mm 30mm Eyepiece and Soft Sided CaseSKU: ESEPWP82KITMfr. Part: EPWP 82 KIT
Explore Scientific 82deg Series 6.7mm Eyepiece - 82deg Series 11mm Eyepiece - 82deg Series 18mm Eyepiece - 82deg Series 30mm Eyepiece - Carrying Case - Explore Scientific 1 Year Limited Warranty - Explore Scientific Lifetime Limited Warranty (with Registration)
The Explore Ultra-Wide Eyepieces Comfort, Quality, Value. Explore Scientific 82deg Series eyepieces, with their 82deg 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 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.
Protection from the Outdoors - By making the eyepiece body Argon-purged, the waterproof eyepiece internal elements will remain as pristine as the day they were assembled. Argon atoms are " larger" than that of Nitrogen and therefore they are less likely to "leak" or diffuse their way through the seals over the life of the eyepiece. The atomic radius of Argon is larger than Nitrogen by 0.13 angstroms and has a larger atomic volume by 11.2 cubic centimeters/molecule. Argon also has superior inertness vs Nitrogen (i.e. forming few or no chemical compounds with other elements) that prevents adverse reactions with eyepiece components and therefore extends the longevity of the internal components and also prevents chemical reactions with other elemental contaminants that may be introduced through a weakened seal. And, finally because Argon is less conductive of heat than Nitrogen, Argon cools slower thereby buffering the effects of rapid temperature changes of the optics.
The sealed, dry environment is impervious to internal fogging and contaminants such as fungus growing in between the lens elements. Their waterproof eyepiece is easier to clean and there is no risk of cleaning solution migrating from the top of the lens and seeping around edges to be trapped in between elements. To insure a perfect seal they test every eyepiece in one meter of water for 30 minutes. This kit includes an 82deg 6.7mm, 82deg 11mm, 82deg 18mm and 82deg 30mm Argon-Purged Waterproof Eyepieces and a soft sided case. These eyepieces are individually boxed in their Will Tirion "famous" star map box along with the soft-sided case inside an outer box.
Focal Length6.7mm, 11mm, 18mm, 30mmBarrel Size1.25" and 2"
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Filed under: High-End Telescope Auctions (USA)