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GlennLeDrew
professor emeritus
Reged: 06/18/08
Posts: 620
Loc: Ottawa, Ontario, Canada
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Re: Miyauchi 5x32 limits
06/19/08 02:27 AM
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Edz, et al,
A friend owns a Tasco Model 124 7x50, and we've had them apart. The extremely wide true field is achieved via use of a single-element, weak, positive meniscus lens threaded into the prism shelf almost up against the rear prism. The lens therefore acts like a telescompressor.
The eyepieces have 27mm diameter field stops, if memory serves. Taking the compressor lens out yields very close to 10X, with the necessary bit of refocusing.
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Home-made 11X50 right angle bino, 8.1 deg. FOV
Modified 26X100 bino, 3.5 deg. FOV
Mediocre minds discuss people. Good minds discuss events. Great minds discuss ideas.
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