EXPLORE SCIENTIFIC 82° Ar Eyepiece 30mm (2") (Refurbished)

With the introduction of the 68° Series we are pleased to make two important improvements in eyepiece manufacture, the first being 15 layer Enhanced Multi-layer Deposition (EMD™) coatings on all glass-to-air surfaces to gain maximum contrast, and waterproofing the eyepiece with the use of Argon gas purging instead of standard Nitrogen gas. Although Nitrogen is a fine choice that will last for many years, Argon is a larger molecule that maintains its protective properties over a wider range of temperatures, and is even more resistant to diffusion thereby further extending the protective waterproof environment of the eyepiece body. Through computer-optimized design, a careful selection of optical glasses, and enhanced multi-layer deposition coatings, the Explore Scientific 68° Series™ eyepieces produce long eye-relief and ensure high image-correction, a flat field, and high contrast across the entire image field. An excellent choice for those who make extended visual studies of detail with subtle variations of brightness, and for those who must wear glasses while observing. All 68° Series eyepieces are fully EMD (Enhanced Multi-Layer Deposition) coated and edge-blackened to produce superior contrast.

NEW - now including a high-quality aperture Solar-filter for safe observation of sunspots, eclipses and planet transits. Great telescope for night and solar observation.Excellent for entering into the hobby of astronomy: 90mm aperture delivers 200 times more light than the naked eye! Observe craters, valleys and rims on the moon from nearly 400,000km away just as you would look out of the window of a spaceship! The MESSIER AR-90L does not only provide highly detailed views of the moon: Gaze at the division of the rings of saturn millions of kilometers away or explore the Great Red Spot of Jupiter, a giant tornado in Jupiter's atmosphere. Watch the seasons on Mars and find the sickle of Venus. The MESSIER AR-90L gives you images that are many times brighter than the instrument Galileo Galilei was using for his famous explorations almost 400 years ago. This telescope is an optical tube without mount and tripod. FEATURESOptical design: refractor telescopeLens diameter: 90 mm / focal length: 1200 mm / F/13.3Maximum recommended magnification: 180xTelescope for night and solar observationHigh quality BRESSER refractor opticsIdeal telescope for planets, double stars and planetary nebulae31.7 mm (1.25") diagonal mirror6x30 straight through viewfinder reticleoptimized finder socket for comfortable useCradle ring with piggyback camera holder (1/4 thread)Smartphone camera adapter for sky navigation includedUniversal 44mm Dovetail adapter (fits LXD75/Great Polaris/EQ5)Rack and Pinion focuser 31,7 mm / 1,25" SCOPE OF DELIVERY: 90mm refractor telescope tube assemblyAperture solar-filter26 mm Super Plössl eyepiece 31,7 mm (1.25")Diagonal mirror 31,7 mm (1.25") Tube clamps with universal 44 mm Dovetail plate (fits LXD75/Great Polaris/EQ5)Smartphone adapter for celestial navigation 6x30 optical finderAstronomy software StellariumRotatable star map

Explore Scientific 82° Series™ 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° apparent field is truly a full-immersion experience. Your eye is relaxed, allowing you to easily use the "averted vision" technique to study faint details across a huge field-of-view. The 82° Series eyepieces come with a twist-up rubber eye-guard that raise to the desired height 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. To keep internal reflections to a minimum, all internal surfaces of the eyepiece barrel are flat black, as well as the edges of the lenses themselves to minimize the scattering of light within the lenses themselves. All 82° Series eyepieces are fully multi-coated and edge-blackened to produce maximum contrast.