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This medium focal length eyepiece is usable with any scope type, under virtually any seeing conditions – from so-so to superb. It has a very wide field and exceptionally long eye relief for eyeglass use. An f/4.5 Dobsonian will yield a wide 4.9mm exit pupil, well into the rich field observing range. With short focal length refractors, it’s a low power, very wide field eyepiece. With the 480mm focal length TeleVue TV-76, for example, it provides 22x, a 3.5mm exit pupil, and a huge 2.82 degree field that’s over five and a half times as wide as the full Moon. With its long 20mm eye relief, even those who must wear eyeglasses while observing will see the entire wide field of this eyepiece and the nebula and open cluster splendors it can hold. It is also truly excellent for medium magnification lunar, planetary, galaxy, and globular observing with long focal length refractors, reflectors, or catadioptric scopes.
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Terms of Sale | PRIVACY POLICY 7/1/2004 | Fine Print
Toll-Free Telephone Astronomics: 800-422-7876; Christophers, Ltd.: 800-356-6603
Alternate Telephone: 405-364-0858 24 Hour Fax Line: 405-447-3337
Telephone Hours: Monday-Friday 8 AM - 9 PM CST
Saturday Noon - 5 PM CST
Store Hours: Monday-Friday 9 AM - 5 PM CST
Saturday Noon - 5 PM CST
Astronomics / Christophers, Ltd.
680 S.W. 24th Ave.
Norman, OK, 73069
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