Tele Vue Optics has been thrilling customers since 1979. Creating "goodies" for the observing enthusiast has been founder AlNagler's continuing pursuit. Al put his lifelong love of amateur astronomy to work as a professional optical designer in 1958. But, it was his involvement in designing NASA lunar landing simulators (as seen in the movie "Apollo 13") that most directly influences Tele Vue products of today. Al wanted his own observing equipment to deliver that seemingly limitless vista created for the astronauts. Producing wide, full-field sharpness and high contrast images are the keys. In the midst of the eyepiece-crushing Dobsonian telescope revolution of the early 80s, Tele Vue launched its Plössl eyepiecedesign. So improved in edge sharpness, it was awarded U.S. and international patents. Al's "Nagler" series heralded its own revolution in eyepieces. It has an 82° apparent field, and 10 times the field sharpness of any previous eyepiece. Nagler eyepieces approach the realization of Al's dream for "spacewalk" viewing, even more so with the new long eye relief Nagler Type 4 models, long focal length Type 5 models, and short focal length Type 6 models. The next generation Nagler, Al's son David (full time at Tele Vue for 20-years and now company President) took the next step in the "spacewalk" experience by laying the conceptual ground work for Al's in-house protégé Paul Dellechiaie for a 100° eyepiece. The result is everything a Tele Vue eyepiece represents. It's the Tele Vue Ethos. Also, look at the celebrated Panoptic eyepieces for "tack-sharp," low power, 68° fields. And, the 60° Radian series eyepieceswith 20mm eye relief offers the most performance possible for eyeglass wearers. These, along with many other long eye-reliefTele Vue eyepieces accept DIOPTRX, the unique optical "missing link" between you and your equipment. It corrects your eyesight astigmatism so you can replace your eyeglasses for the best possible visual experience. Planetary enthusiasts can enjoy Nagler zooms with constant 50° fields and 3-6mm or 2-4mm focal lengths. The performance inherent in EVERY Tele Vue eyepiece manufactured is verified for you at f/4; quality assurance available nowhere else. With this effort, Tele Vue serendipitously pioneered the multipurpose, diffraction limited, 4-element, fast refractor as a serious, portable alternative to Newtonians and SCTs. The current Tele Vue-NP 101 is the ultimate evolution. This Benchmark 4 inch, f/5.4 scope sets new standards in both wide-angle AND high power viewing. With the NP101is and NP127is (5-inch aperture "Imaging System") versions, along with "imaging system" accessories, astro-imaging capability has reached new heights. Also check out our great accessories: Bino Vue, Paracorr, Starbeam, Bandmate filters, and convenient tripods and mounts with Sky Tour Computer. There's a reason why virtually every product is "best in class" — we wouldn't have it any other way. Above all, we want your Tele Vue experience to be "...even better than you imagined."