Explore Scientific 4.7mm 82 Degree Argon-Purged Eyepiece
|This eyepiece is Argon purged to prevent internal fogging, and is a useful high power eyepiece in many shorter focal length telescopes. |
Using advanced computer design, combinations of low dispersion and high refractive index optical glasses, and durable multilayer deposition coatings, Explore Scientific 82 Degree Series Argon-Purged Waterproof extreme wide field eyepieces are optimized to produce high contrast, high resolution, and superior flat field characteristics. The visual effect of these eyepieces with their long eye-relief and their 82 degree apparent field is truly a full-immersion experience. The 82 Degree Series eyepieces come with a removable and foldable soft silicone rubber eyecup for the comfort of the observer, and as experienced astronomers know, eye comfort is critical when trying to observe at the visual limits of the telescope.
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. The sealed, dry environment is impervious to internal fogging and contaminants such as fungus growing in between the lens elements. Explore Scientific waterproof eyepieces are 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. Every eyepiece is tested in one meter of water for 30 minutes to ensure a perfect seal.
Explore STAR Warranty
All Explore Scientific Products sold within North America are covered by a standard one year limited warranty; however, when the new product is registered within 60 days of purchase, it is covered under the Explore STAR Transferable North America Unlimited Lifetime Product Warranty program. The full details of this extended warranty are available here (PDF, opens in separate window.)