The Plossl eyepiece is the best general purpose design. The design combines very good sharpness, excellent color correction, and a good field of view. SmartAstronomy’s 40mm plossl eyepiece (GSO-Guan Sheng Optics) has an (Apparent Field of View) AFOV of 44°. Contrast is important to bring fine planetary detail and faint deep-sky features. This plossl eyepiece has Edge-Blackened Optics and Advanced Fully Multi-Coated Optics. These combined steps in the manufacturing process result in better contrast. With Edge-Blackened Optics, reflection is eliminated. With the addition of the Advanced Fully Multi-Coating on these optics, you have an excellEnt made eyepiece. Sure rubber grip handling and rubber eyeguards that fold down for eyeglass wearers. The barrels are threaded to accept filters. 4 Elements / 2 Groups 31MM Eye Relief Fully Multicoated (Apparent Field of View) AFOV of 44° |
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