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  • $250.00 - $250.00
    $250.00
    $250.00 - $250.00
    $250.00

    Optec DSI 3.5" Extension Tube Set - 5 Pieces

    OPC-19890

    Rich Simons of Deep Sky Instruments and Optec have jointly developed a new, larger diameter standard spacer for large aperture telescopes. Like th...

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    $250.00 - $250.00
    $250.00
    $250.00 - $250.00
    $250.00
  • $95.00 - $95.00
    $95.00
    $95.00 - $95.00
    $95.00

    Optec DSI 3.5"x24tpi(M) to M72x1(M) Takahashi Adapter

    OPC-19917

    Optec-DSI 3.5x24tpi male thread to M72x1mm (male) Takahashi thread. Outside Diameter: 3.82" (97.0mm) Overall Height: 0.74" (18.8mm) Clear Aperture...

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    $95.00
  • $135.00 - $135.00
    $135.00
    $135.00 - $135.00
    $135.00

    Optec OPTEC-4300 to DSI 3.5"(F) Adapter

    OPC-19830

    The #19830 OPTEC-4300 to female Optec/DSI 3.5" threaded receiver allows any combination of our DSI 3.5-inch spacers to be easily installed on the c...

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    $135.00 - $135.00
    $135.00
    $135.00 - $135.00
    $135.00