{"product_id":"ocular-explore-scientific-68-ar-16mm-1-25","title":"EXPLORE SCIENTIFIC 68° Ar 16mm (1.25\") Eyepiece","description":"With the introduction of the 68° Series, we are pleased to make two important improvements in eyepiece manufacturing: the first being enhanced 15-layer multi-layer deposition (EMD™) coatings on all glass-to-air surfaces for maximum contrast, and the second being eyepiece waterproofing with the use of argon gas purging instead of standard nitrogen gas. Although nitrogen is a good choice that will last for many years, argon is a larger molecule that maintains its protective properties over a wide range of temperatures and is even more resistant to diffusion, thus broadening its water protection to the eyepiece body.\u003cbr\u003e\n\u003cbr\u003e\nThrough computer-optimized design, careful selection of optical lenses, and reinforced multi-layer deposition coatings, Explore Scientific 68° Series eyepieces provide a large eye relief and ensure high image correction, a flat field, and high contrast across the entire image field. An excellent choice for those who conduct long visual studies of detail with subtle brightness variations, and for those who need to wear glasses while observing.\u003cbr\u003e\n\u003cbr\u003e\nThe 68° Series eyepieces are fully EMD (Enhanced Multi-Layer Deposition) coated and edge-darkened to produce superior contrast. \u003cbr\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":52791593566551,"sku":"218616","price":171.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/6198\/6860\/files\/0218616_M_2_v0416.jpg?v=1771178444","url":"https:\/\/astrotelescopios.com\/en-us\/products\/ocular-explore-scientific-68-ar-16mm-1-25","provider":"Astro Telescopios","version":"1.0","type":"link"}