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  • Takahashi TOA-150B Refractor OTA

    $12,970.00

    The TOA series is a member of Takahashi’s line of triplet refractors.  In the TOA design, three lens elements are used, with the front and rear constructed from ED glass.  The resulting system achieves a high level of apochromatic performance for both visual observation and imaging.  Takahashi engineers have a undertaken a complete redesign of the triplet system, completely eliminating spherical aberration while minimizing axial chromatic aberration in the visible light spectrum.

    In typical apochromatic designs, the elimination of chromatic aberration is usually at the expense of increasing spherical aberration at various wavelengths.  However, with the TOA series, the focal shift across the entire visible spectrum from 436 nm up to 656 nm is less than +/- 0.01 mm.  This is less than 1/100 the aberration of a typical apochromatic design.

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  • TEC 160mm F/7 telescope w/ oil-spaced apochromatic-triplet objective

    $12,500.00

    APO160FL F/7 – Slightly larger than the TEC APO140FL F/7, the APO160FL F/7 is slightly longer and heavier, and may require a larger mount. APO160FL has excellent color correction thanks to glass combined with Fluorite as a middle element.

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