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If you get a 13 marked "made in japan" be certain it's the t6, not the t1. Offhand, I don't recall where the t6's were made.

T

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Hi Tom,

I spoke at length about this topic (and many others) with Al Nagler at 2007 TSP. Al explained to me that he tried to split production of Televue eyepieces between the manufacturing plants in Taiwan and Japan. He indicated that generally the smaller eyepiece series were produced in the Japanese factory and the larger eyepieces (T4's, T5's, Panoptics and now ETHOS were produced at the Taiwanese factory. Al indicated the Taiwanese factory were "slightly" better set up tooling wise to produce the physically larger eyepieces, but each factory could quickly tool up to produce any eyepiece in the TV range. Al said this gave him comfort if ever issues arose with one manufacturer, because he could quickly switch all manufacturing to either Japan or Taiwan.

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Ah yes, I remember that now. Thanks for assisting in my momentary lapse of memory John.

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There are two theories to arguing with my wife. Neither one works.

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Actually, in this eyepiece, if you are far enough in to contact the eyecup, you are too close to the eyepiece. The field stop becomes visible several mm before your face touches the eyecup. Many people report blackouts with the Type 6 Naglers, and that is why--they think they have to touch the eyecup to see the whole field of view. If you move in slowly until your peripheral vision *just* sees the fieldstop, you will never touch the lens with eyelashes.
The eyecup is designed, I believe to reduce peripheral light hitting the eye, because the eye lens is fairly flat, which can reflect light back at the eye that is reflected off the cornea.
The coatings on this eyepiece are so good there essentially is no internal reflection, and the ghosts and light scatter people report is often due to the reflection off the cornea being reflected back by the eye lens, which is only an issue with planets and very bright stars.

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