|
Lots has been written about this line of eyepieces and the various makes of this design. Originally built as Masuyamas in Japan, but no longer manufactured under that name. The old Masuyama line can still be found occasionally on Astromart, but are getting pretty rare.
The Masuyama clones come in many flavors. Celestron Ultimas, Orion Ultrascopics, Park's Gold Series and Antares Elites, to name a few. Stateside they're priced below the Televue plossls and considered nearly as good, but not quite. Prices vary widely, with the Antares label generally lowest, the Celestron & Orion lines similarly priced in the middle and the Park's Gold Series priced higher. They may be made by different manufacturers, but all seem to function the same. Seems like there was some different focal lengths available in different lines and I seem to recall that one of the lower focal lengths (5mm or 7.5mm?) of one brand had some problem. If anyone's really interested I can get some links to some very long discussions of these EPs.
|