Astronomy * Celestron Ultima Series -1-1/4'' 12.5mm Eyepiece - CSN 93352 - Astronomy
New Page 1 Rated as best in their class by Sky and Telescope magazine, the Ultima eyepieces use a 5-element hybrid optical design. They feature long eye relief and a wide field, and each air-to-glass surface is fully multicoated to enhance contrast levels. These special eyepieces are computer designed to keep visual aberrations to an absolute minimum. They virtually eliminate the following aberrations: spherical, color, field curvature, coma, astigmatism, distortion and spherical distortion of the exit pupil. The inside surfaces and edges of all lenses are blackened, to keep out reflected light. Outside surfaces are flat black, with rubber grips for secure handling. Rubber eyecups are included both for comfortable use and to keep out extraneous light. Threaded barrels accept Celestron 1-1/4" thread-in filters. Lens and barrel caps are included for safe storage. Focal Length Item # Eye Relief Apparent Field Size 5mm 93350 4mm 50? 1-1/4" 7.5mm 93351 5mm 51? 1-1/4" 10mm 93348 7mm 51? 1-1/4" 12.5mm 93352 9mm 51? 1-1/4" 18mm 93353 13mm 51? 1-1/4" 30mm 93349 21mm 50? 1-1/4" 35mm 93355 25mm 49? 1-1/4" 42mm 93356 32mm 36? 1-1/4"
csn93352 - - AS-CSN 93352