07171-02 Series 4000 9.7mm Super Plossl Eyepiece

Style: Eyepiece Designed and manufactured to exacting standards, Series 4000 Super Plssl eyepieces deliver wide 52 apparent fields of view (44 for the SP40mm) with all of the resolution, edge-of- field sharpness and color correction demanded in the most advanced visual applications. All eyepieces are multi-coated and include soft rubber eyeguards. From the ManufacturerThe world standard in telescope oculars, Series 4000 eyepieces yield the widest possible fields of view, consistent with pinpoint edge-of-field sharpness and long eye reliefand yet with extremely low astigmatism, spherical aberration, and off-axis color. Incorporating 7-layer multi-coatings and edge-blackened optics for optimum image contrast, these sophisticated 4 to 8-element designs permit levels of optical performance generally impossible to achieve with eyepieces of fewer elements. All Series 4000 eyepieces include a soft rubber eyeguard, custom fitted to each eyepiece with a bayonet mount. The eyeguards fold down for eyeglass wearers, and in fact the folded eyeguard shields eyeglasses from coming into contact with the metal eyepiece housings. Rubber grips are provided on all but the three shortest focal length Super Plssl eyepieces. Super Plossls Designed to utilize the very latest in optical glass types, 4-element Super Plssls are excellent general-purpose eyepieces.

For observing hairline lunar and planetary detail, splitting close double stars, or for resolving faint nebulosity in deep-space, Super Plssls optimize the performance of any telescope type, whether f/10 Schmidt-Cassegrain, f/16 refractor, or f/4 reflector. They also operate well in conjunction with the air-spaced design of the #140 2x Apochromatic Barlow. All focal lengths through 32mm are parfocal. The Super Plssl 56mm eyepiece with 2" O. D. barrel yields 36X and an actual field of view of 1.4 degrees on an 8" f/10 Schmidt-Cassegrain telescope.