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Due to the USA–China tariff escalation, we will temporarily not receive additional inventory for Celestron and Sky-Watcher products. As a result, we are unable to accept orders for any out-of-stock items and encourage you to take advantage of the products currently in stock while supplies last.
Due to the USA–China tariff escalation, we will temporarily not receive additional inventory for Celestron and Sky-Watcher products. As a result, we are unable to accept orders for any out-of-stock items and encourage you to take advantage of the products currently in stock while supplies last.

Used Equipment

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    $279.53 USD
    $279.53 USD - $279.53 USD
    $279.53 USD
    $235.58 USD
    $235.58 USD - $235.58 USD
    $235.58 USD

    Baader 4nm 1.25" Ultra-Narrowband OIII Filter - CMOS-Optimized (USED)

    BAA-2961400-125-USED
    Only 1 left!

    In perfect condition, used Baader H-alpha / O-III / S-II Ultra-Narrowband (Narrowband) filter set - Premium Grade 3.5 / 4 nm half width (to harmo...

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    $279.53 USD
    $279.53 USD - $279.53 USD
    $279.53 USD
    $235.58 USD
    $235.58 USD - $235.58 USD
    $235.58 USD
    Save 16% Save %
  • Save 6% Save %
    $190.92 USD
    $190.92 USD - $190.92 USD
    $190.92 USD
    $178.67 USD
    $178.67 USD - $178.67 USD
    $178.67 USD

    Baader 6.5nm 36mm H-alpha Filter - CMOS-Optimized (OPEN BOX)

    BAA-2961100-36-OPENBOX
    Only 1 left!

    In perfect condition, open box Baader H-alpha / O-III / S-II Narrowband Filter Set - Precision Grade 6.5 nm FWHM, recommended for optical systems...

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    $190.92 USD
    $190.92 USD - $190.92 USD
    $190.92 USD
    $178.67 USD
    $178.67 USD - $178.67 USD
    $178.67 USD
    Save 6% Save %
  • Save 31% Save %
    $302.58 USD
    $302.58 USD - $302.58 USD
    $302.58 USD
    $207.49 USD
    $207.49 USD - $207.49 USD
    $207.49 USD

    Baader CCD LRGB 31mm Unmounted Filter Set (OPEN BOX)

    BAA-2459474-OPENBOX
    Only 1 left!

    In perfect condition, open box Filter size 31 mm - round, unmounted - filter thickness 2 mm Set of L-R-G-B filters High-quality anti-reflective ...

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    $302.58 USD
    $302.58 USD - $302.58 USD
    $302.58 USD
    $207.49 USD
    $207.49 USD - $207.49 USD
    $207.49 USD
    Save 31% Save %
  • Save 33% Save %
    $148.41 USD
    $148.41 USD - $148.41 USD
    $148.41 USD
    $100.14 USD
    $100.14 USD - $100.14 USD
    $100.14 USD

    Baader Contrast Booster Filter - 2" - USED

    U-BAA-2458365
    Only 1 left!

    In pristine condition, as new.

    $148.41 USD
    $148.41 USD - $148.41 USD
    $148.41 USD
    $100.14 USD
    $100.14 USD - $100.14 USD
    $100.14 USD
    Save 33% Save %