Save £58! Celestron's Ultima eyepieces were voted best in their class by Sky & Telescope magazine. These eyepieces use a 5-element optical design and feature long eye relief and wide fields of view. Each of the air-to-glass surface on the entire Ultima range are fully multicoated to enhance contrast levels. The Ultima series of Celestron eyepieces were computer designed to keep aberrations to an absolute minimum. They virtually eliminate spherical, colour, field curvature, coma, astigmatism, distortion and spherical distortion of the exit pupil. The inside surfaces and edges of the lenses are blackened to keep out reflected light. Outside surfaces are flat black and include rubber grips for secure handling. Rubber eyecups are also included both for comfortable use and to keep out extraneous light.
Roll guard - Ergonomic contours prevent eyepiece from rolling off flat surfaces
28mm clear aperture surface lens - For comfortable viewing
70 degree Field - Wide FOV for high and low magnifications
Extendable twist-up eyecups - Good for eyeglass wearers
Parfocal eyepiece - Little or no focusing is needed when changing from low to high power.
Threaded barrels - Accept 1-1/4" or 2" Celestron thread-in filters.
Shock resistant rubber covering - Scratch and dent resistant
No slip grip - Designed for secure handling even in moist conditions
FOCAL LENGTH: 13 mm
ANGULAR FIELD OF VIEW: 70 °
EYE RELIEF: 16 mm
OPTICAL COATINGS: Fully Multi Coated
OPTICAL DESIGN: 8-elements
SIZE: 1.25"-2"
PARFOCAL: Yes
