Takahashi
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Takahashi TOA-130NS 5.1" F/7.7 Ortho-Apochromat Triplet Refractor OTA
$7,200.00This performance of this Takahashi 5.1" ED triplet refractor is too good to let it be called simply an apochromatic scope. Only the term ortho-apochromatic is accurate enough to describe its optical excellence . . . -
Takahashi TOA-130NFB 5.1" Ortho-Apochromat Triplet Refractor OTA
$8,110.00This performance of this 4" focuser Takahashi 5.1" ED triplet refractor is too good to let it be called simply an apochromatic scope. Only the term ortho-apochromatic is accurate enough to describe its optical excellence, both visually and for medium format and 35mm/large format CCD imaging . . .