| These have become the "gold standard" against which all
planetary oculars are measured. When an experienced observer wants
perfect contrast and superb resolution, he puts away his designer
oculars and gets out his University Abbes. Amazingly, when a major
publication tested what was purported to be a new planetary ocular,
our orthos were not included in the comparison test. Well, I think
by now everyone is familiar with the term "media bias." We have been
fighting it for years and years. How can a 4-element design give better color fidelity and contrast
than say an expensive multi-element design? In optics, often the
laws of physics dictate "less is better." An eight element system
must have sixteen precision polished surfaces. All of the elements
must be perfectly centered and cemented. Many of you have purchased
these and tell me you get that uneasy feeling that even though they
cost a small fortune, the image should look better! Our orthos
consistently out perform typical Plossl and Monocentric designs.
University Optics has been selling these exquisite oculars for over
45 years and they just keep getting better and better. These are
crafted for us by a small shop in Japan employing a few skilled
optical workers. This region in Japan is noted for precision optical
components and is know as "little Switzerland." My long personal
relationship with the owner assures that we receive only the best of
the best.
Better high index glass, blackened lens edges, highly defined field
stops, multi-coatings and better lens cements complete the picture.
The barrels are 1-1/4" O.D. machined from brass, threaded for
filters, and satin chrome plated. Field of view: up to 47 degrees
depending on focal length. Please specify 4mm, 5mm, 6mm, 7mm, 9mm,
12.5mm, 18mm or 25mm.
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