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Filters

Choose from our selection of Moon Filters, Nebular Filters, Solar Filters, Solar Glasses, Protective Filters & more from reputable brands such as Explore Scientific, Kowa, Lunt Solar Systems, DayStar, Astrozap, Unistellar, Dwarf Lab, and Vaonis.

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    $29.99 - $29.99
    $29.99
    $29.99 - $29.99
    $29.99

    Explore One Moon Filter 1.25"

    Explore One
    In stock

    Explore One 1.25" Moon Filter The Explore One 1.25" Moon Filter enhances lunar observations by reducing the brightness and glare, allowing users to...

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    $29.99 - $29.99
    $29.99
    $29.99 - $29.99
    $29.99
  • DayStar 125mm Off-Axis ERF with 460mm Inside Diameter Cap
    Special Order
    $1,195.00 - $1,195.00
    $1,195.00
    $1,195.00 - $1,195.00
    $1,195.00

    DayStar 125mm Off-Axis ERF with 460mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar Off-Axis 125mm Energy Rejection Filter with 460mm Inside Diameter Cap - for 16-inch SCT - E-460F125 The DayStar 125mm Off-Axis Energy Rejec...

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    $1,195.00 - $1,195.00
    $1,195.00
    $1,195.00 - $1,195.00
    $1,195.00
    Special Order
  • DayStar 115mm Off-Axis ERF with 410mm Inside Diameter Cap
    Special Order
    $1,195.00 - $1,195.00
    $1,195.00
    $1,195.00 - $1,195.00
    $1,195.00

    DayStar 115mm Off-Axis ERF with 410mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 115mm Off-Axis Energy Rejection Filter with 410mm Inside Diameter Cap - for 14-inch SCT - E-410F115 Meet the DayStar 115mm Off-Axis Energy ...

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    $1,195.00 - $1,195.00
    $1,195.00
    $1,195.00 - $1,195.00
    $1,195.00
    Special Order
  • DayStar 100mm Off-Axis ERF with 356mm Inside Diameter Cap
    Special Order
    $895.00 - $895.00
    $895.00
    $895.00 - $895.00
    $895.00

    DayStar 100mm Off-Axis ERF with 356mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 100mm Off-Axis Energy Rejection Filter with 356mm Inside Diameter Cap - for 12-inch SCT - E-356F100 Introducing the DayStar 100mm Off-Axis ...

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    $895.00 - $895.00
    $895.00
    $895.00 - $895.00
    $895.00
    Special Order
  • DayStar 90mm Off-Axis ERF with 325mm Inside Diameter Cap
    Special Order
    $695.00 - $695.00
    $695.00
    $695.00 - $695.00
    $695.00

    DayStar 90mm Off-Axis ERF with 325mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 90mm Off-Axis Energy Rejection Filter with 325mm Inside Diameter Cap - for 11-inch SCT - E-325F90 Discover the DayStar 90mm Off-Axis Energy...

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    $695.00 - $695.00
    $695.00
    $695.00 - $695.00
    $695.00
    Special Order
  • DayStar 80mm Off-Axis ERF with 311mm Inside Diameter Cap
    Special Order
    $550.00 - $550.00
    $550.00
    $550.00 - $550.00
    $550.00

    DayStar 80mm Off-Axis ERF with 311mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 80mm Off-Axis Energy Rejection Filter with 311mm Inside Diameter Cap - for 10-inch SCT - E-281F80 The DayStar 80mm Off-Axis Energy Rejectio...

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    $550.00 - $550.00
    $550.00
    $550.00 - $550.00
    $550.00
    Special Order
  • DayStar 80mm Off-Axis ERF with 281mm Inside Diameter Cap
    Special Order
    $550.00 - $550.00
    $550.00
    $550.00 - $550.00
    $550.00

    DayStar 80mm Off-Axis ERF with 281mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 80mm Off-Axis Energy Rejection Filter with 281mm Inside Diameter Cap - for 9.25-inch SCT - E-281F80 The DayStar 80mm Off-Axis ERF with 281 ...

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    $550.00 - $550.00
    $550.00
    $550.00 - $550.00
    $550.00
    Special Order
  • DayStar 63mm Off-Axis ERF with 244mm Inside Diameter Cap
    Special Order
    $550.00 - $550.00
    $550.00
    $550.00 - $550.00
    $550.00

    DayStar 63mm Off-Axis ERF with 244mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 63mm Off-Axis Energy Rejection Filter with 244mm Inside Diameter Cap - for 8-inch SCT - E-244F63 Introducing the DayStar 63mm Off-Axis Ener...

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    $550.00 - $550.00
    $550.00
    $550.00 - $550.00
    $550.00
    Special Order
  • DayStar 150mm ERF with 220mm Inside Diameter Cap
    Special Order
    $1,645.00 - $1,645.00
    $1,645.00
    $1,645.00 - $1,645.00
    $1,645.00

    DayStar 150mm ERF with 220mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 150mm Energy Rejection Filter with 220mm Inside Diameter Cap - For Refractor - E-220N150 The DayStar 150mm Energy Rejection Filter with a 2...

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    $1,645.00 - $1,645.00
    $1,645.00
    $1,645.00 - $1,645.00
    $1,645.00
    Special Order
  • DayStar 150mm ERF with 210mm Inside Diameter Cap
    Special Order
    $1,645.00 - $1,645.00
    $1,645.00
    $1,645.00 - $1,645.00
    $1,645.00

    DayStar 150mm ERF with 210mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 150mm Energy Rejection Filter with 210mm Inside Diameter Cap - For Refractor - E-210N150 Meet the DayStar 150mm Energy Rejection Filter wit...

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    $1,645.00 - $1,645.00
    $1,645.00
    $1,645.00 - $1,645.00
    $1,645.00
    Special Order
  • DayStar 150mm ERF with 200mm Inside Diameter Cap
    Special Order
    $1,645.00 - $1,645.00
    $1,645.00
    $1,645.00 - $1,645.00
    $1,645.00

    DayStar 150mm ERF with 200mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 150mm Energy Rejection Filter with 200mm Inside Diameter Cap - For Refractor - E-200N150 Presenting the DayStar 150mm Energy Rejection Filt...

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    $1,645.00 - $1,645.00
    $1,645.00
    $1,645.00 - $1,645.00
    $1,645.00
    Special Order
  • DayStar 150mm ERF with 190mm Inside Diameter Cap
    Special Order
    $1,645.00 - $1,645.00
    $1,645.00
    $1,645.00 - $1,645.00
    $1,645.00

    DayStar 150mm ERF with 190mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 150mm Energy Rejection Filter with 190mm Inside Diameter Cap - For Refractor - E-190N150 Discover the DayStar 150mm Energy Rejection Filter...

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    $1,645.00 - $1,645.00
    $1,645.00
    $1,645.00 - $1,645.00
    $1,645.00
    Special Order
  • DayStar 130mm ERF with 190mm Inside Diameter Cap
    Special Order
    $995.00 - $995.00
    $995.00
    $995.00 - $995.00
    $995.00

    DayStar 130mm ERF with 190mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 130mm Energy Rejection Filter with 190mm Inside Diameter Cap - For Refractor - E-190N130 Presenting the DayStar 130mm Energy Rejection Filt...

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    $995.00 - $995.00
    $995.00
    $995.00 - $995.00
    $995.00
    Special Order
  • DayStar 150mm ERF with 180mm Inside Diameter Cap
    Special Order
    $1,645.00 - $1,645.00
    $1,645.00
    $1,645.00 - $1,645.00
    $1,645.00

    DayStar 150mm ERF with 180mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 150mm Energy Rejection Filter with 180mm Inside Diameter Cap - For Refractor - E-180N150 Introducing the DayStar 150mm Solar Energy Rejecti...

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    $1,645.00 - $1,645.00
    $1,645.00
    $1,645.00 - $1,645.00
    $1,645.00
    Special Order
  • DayStar 130mm ERF with 180mm Inside Diameter Cap
    Special Order
    $995.00 - $995.00
    $995.00
    $995.00 - $995.00
    $995.00

    DayStar 130mm ERF with 180mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 130mm Energy Rejection Filter with 180mm Inside Diameter Cap - For Refractor - E-180N130 The DayStar 130mm Energy Rejection Filter featurin...

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    $995.00 - $995.00
    $995.00
    $995.00 - $995.00
    $995.00
    Special Order
  • DayStar 130mm ERF with 170mm Inside Diameter Cap
    Special Order
    $995.00 - $995.00
    $995.00
    $995.00 - $995.00
    $995.00

    DayStar 130mm ERF with 170mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 130mm Energy Rejection Filter with 170mm Inside Diameter Cap - For Refractor - E-170N130 Discover the DayStar 130mm Energy Rejection Filter...

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    $995.00 - $995.00
    $995.00
    $995.00 - $995.00
    $995.00
    Special Order
  • DayStar 130mm ERF with 160mm Inside Diameter Cap
    Special Order
    $995.00 - $995.00
    $995.00
    $995.00 - $995.00
    $995.00

    DayStar 130mm ERF with 160mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 130mm Energy Rejection Filter with 160mm Inside Diameter Cap - For Refractor - E-160N130 The DayStar 130mm Energy Rejection Filter featurin...

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    $995.00 - $995.00
    $995.00
    $995.00 - $995.00
    $995.00
    Special Order
  • DayStar 130mm ERF with 150mm Inside Diameter Cap
    Special Order
    $995.00 - $995.00
    $995.00
    $995.00 - $995.00
    $995.00

    DayStar 130mm ERF with 150mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 130mm Energy Rejection Filter with 150mm Inside Diameter Cap - For Refractor - E-150N130 Presenting the DayStar 130mm Energy Rejection Filt...

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    $995.00 - $995.00
    $995.00
    $995.00 - $995.00
    $995.00
    Special Order
  • DayStar 100mm ERF with 150mm Inside Diameter Cap
    Special Order
    $695.00 - $695.00
    $695.00
    $695.00 - $695.00
    $695.00

    DayStar 100mm ERF with 150mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 100mm Energy Rejection Filter with 150mm Inside Diameter Cap - For Refractor - E-150N100 Introducing the DayStar 100mm Energy Rejection Fil...

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    $695.00 - $695.00
    $695.00
    $695.00 - $695.00
    $695.00
    Special Order
  • DayStar 100mm ERF with 140mm Inside Diameter Cap
    Special Order
    $695.00 - $695.00
    $695.00
    $695.00 - $695.00
    $695.00

    DayStar 100mm ERF with 140mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 100mm Energy Rejection Filter with 140mm Inside Diameter Cap - For Refractor - E-140N100 The DayStar 100mm Energy Rejection Filter featurin...

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    $695.00 - $695.00
    $695.00
    $695.00 - $695.00
    $695.00
    Special Order
  • DayStar 100mm ERF with 130mm Inside Diameter Cap
    Special Order
    $695.00 - $695.00
    $695.00
    $695.00 - $695.00
    $695.00

    DayStar 100mm ERF with 130mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 100mm Energy Rejection Filter with 130mm Inside Diameter Cap - For Refractor - E-130N100 Meticulously crafted DayStar 100mm Energy Rejectio...

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    $695.00 - $695.00
    $695.00
    $695.00 - $695.00
    $695.00
    Special Order
  • DayStar 100mm ERF with 120mm Inside Diameter Cap
    Special Order
    $695.00 - $695.00
    $695.00
    $695.00 - $695.00
    $695.00

    DayStar 100mm ERF with 120mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 100mm Energy Rejection Filter with 120mm Inside Diameter Cap - for Refractors - E-120N100 Presenting the DayStar 100mm Energy Rejection Fil...

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    $695.00 - $695.00
    $695.00
    $695.00 - $695.00
    $695.00
    Special Order
  • DayStar 80mm ERF with 120mm Inside Diameter Cap
    Special Order
    $550.00 - $550.00
    $550.00
    $550.00 - $550.00
    $550.00

    DayStar 80mm ERF with 120mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 80mm Energy Rejection Filter with 120mm Inside Diameter Cap - For Refractor - E-120N80 The DayStar 80mm Energy Rejection Filter featuring a...

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    $550.00 - $550.00
    $550.00
    $550.00 - $550.00
    $550.00
    Special Order
  • DayStar 80mm ERF with 110mm Inside Diameter Cap Set
    DayStar Energy Rejection-Refractor 80mm and 110mm ID Cap - For Refractor
    Special Order
    $550.00 - $550.00
    $550.00
    $550.00 - $550.00
    $550.00

    DayStar 80mm ERF with 110mm Inside Diameter Cap

    DayStar
    Coming soon

    DayStar 80mm Energy Rejection Filter with 110mm Inside Diameter Cap - For Refractor - E-110N80 Introducing the DayStar Energy Rejection-Refractor 8...

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    $550.00 - $550.00
    $550.00
    $550.00 - $550.00
    $550.00
    Special Order