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Filters

Choose from our selection of Moon Filters, Nebular Filters, and Solar Filters - from reputable brands such as Explore Scientific, Lunt Solar Systems, Astrozap, Unistellar, and Vaonis.
  • Original price $1,010.00 - Original price $1,010.00
    Original price
    $1,010.00
    $1,010.00 - $1,010.00
    Current price $1,010.00

    Lunt LS50C 50mm Compact Double-Stack Filter

    Lunt Solar Systems
    In stock

    Lunt 50mm Compact Double-Stack Filter LS50C Presenting the Lunt LS50C 50mm Compact Double-Stack Filter - Crafted specifically for the Lunt LS50THa ...

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    Original price $1,010.00 - Original price $1,010.00
    Original price
    $1,010.00
    $1,010.00 - $1,010.00
    Current price $1,010.00
    Pre-order
  • Original price $19.99 - Original price $39.99
    Original price
    $19.99 - $39.99
    $19.99 - $39.99
    Current price $19.99

    Sun Catcher Variable Large Aperture Solar Filter

    Explore Scientific
    In stock

    Sun Catcher Variable Large Aperture Solar Filter - SC70/80-00 Observe Granulation Features and Sun Spots. Perfect for Eclipse Chasers! Explore Scie...

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    Original price $19.99 - Original price $39.99
    Original price
    $19.99 - $39.99
    $19.99 - $39.99
    Current price $19.99
  • Original price $49.99 - Original price $49.99
    Original price
    $49.99
    $49.99 - $49.99
    Current price $49.99

    Neutral Density Filter 1.25" ND 0.9

    Explore Scientific
    In stock

    Neutral Density Filter 1.25" ND 0.9 - 310245 The neutral density filter transmits light uniformly across the entire visual spectrum. It serves as a...

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    Original price $49.99 - Original price $49.99
    Original price
    $49.99
    $49.99 - $49.99
    Current price $49.99
  • Original price $1,944.00 - Original price $1,944.00
    Original price
    $1,944.00
    $1,944.00 - $1,944.00
    Current price $1,944.00

    Lunt Double Stack Filter For 80mm & 100mm Universal Telescopes

    Lunt Solar Systems
    In stock

    Lunt Double Stack Filter For 80mm & 100mm Universal Telescopes - SFPT Upgrade your Lunt 80mm or 100mm Universal Telescope with the Double Stack...

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    Original price $1,944.00 - Original price $1,944.00
    Original price
    $1,944.00
    $1,944.00 - $1,944.00
    Current price $1,944.00
    Pre-order
  • Original price $427.00 - Original price $2,160.00
    Original price
    $427.00 - $2,160.00
    $427.00 - $2,160.00
    Current price $427.00

    Lunt Blocking Filters

    Lunt Solar Systems
    In stock

    Lunt Blocking Filters - B600 - B1200 - B1800 - B3400 Blocking Filters are required on all Lunt Telescopes Lunt Solar Systems has four different blo...

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    Original price $427.00 - Original price $2,160.00
    Original price
    $427.00 - $2,160.00
    $427.00 - $2,160.00
    Current price $427.00
  • Original price $1,295.00 - Original price $1,295.00
    Original price
    $1,295.00
    $1,295.00 - $1,295.00
    Current price $1,295.00

    DayStar QUARK H-Alpha Eyepiece Solar Filter - Chromosphere

    DayStar
    In stock

    DayStar QUARK H-Alpha "Eyepiece" Solar Filter - Chromosphere Model - DSZ4C The innovative All-In-One design of the seamlessly integrates top-notch ...

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    Original price $1,295.00 - Original price $1,295.00
    Original price
    $1,295.00
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    Current price $1,295.00
  • Original price $249.00 - Original price $249.00
    Original price
    $249.00
    $249.00 - $249.00
    Current price $249.00

    Unistellar Smart Solar Filter

    Unistellar
    In stock

    Turn the Unistellar eQuinox, eQuinox 2, or eVscope 2 into a Solar Telescope with this Smart Solar Filter Unlock the secrets of our nearest star an...

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    Original price $249.00 - Original price $249.00
    Original price
    $249.00
    $249.00 - $249.00
    Current price $249.00
  • Original price $1,917.00 - Original price $1,917.00
    Original price
    $1,917.00
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    Current price $1,917.00

    Lunt 60mm H-Alpha Double Stack Filter (Front Mount)

    Lunt Solar Systems
    In stock

    Lunt 60mm Double Stack Filter (Front Mount) - LS60FHa Presenting the Lunt LS60FHa, a 60mm H-Alpha Double Stack Filter (Front Mount), features a 60...

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    Original price $1,917.00 - Original price $1,917.00
    Original price
    $1,917.00
    $1,917.00 - $1,917.00
    Current price $1,917.00
    Pre-order
  • Original price $109.99 - Original price $109.99
    Original price
    $109.99
    $109.99 - $109.99
    Current price $109.99

    Nebula Filter UHC 1.25-inch

    Explore Scientific
    In stock

    Nebula Filter UHC 1.25-inch - 310215 Explore Scientific Nebula Filter 1.25" UHC Range from 458nm to 508nm with peak at 488nm. Transmission 96.7% UH...

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    Original price $109.99 - Original price $109.99
    Original price
    $109.99
    $109.99 - $109.99
    Current price $109.99
  • Original price $1,195.00 - Original price $1,195.00
    Original price
    $1,195.00
    $1,195.00 - $1,195.00
    Current price $1,195.00

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

    DayStar
    In stock

    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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    Original price $1,195.00 - Original price $1,195.00
    Original price
    $1,195.00
    $1,195.00 - $1,195.00
    Current price $1,195.00
  • Original price $1,195.00 - Original price $1,195.00
    Original price
    $1,195.00
    $1,195.00 - $1,195.00
    Current price $1,195.00

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

    DayStar
    In stock

    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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    Original price $1,195.00 - Original price $1,195.00
    Original price
    $1,195.00
    $1,195.00 - $1,195.00
    Current price $1,195.00
  • Original price $895.00 - Original price $895.00
    Original price
    $895.00
    $895.00 - $895.00
    Current price $895.00

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

    DayStar
    In stock

    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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    Original price $895.00 - Original price $895.00
    Original price
    $895.00
    $895.00 - $895.00
    Current price $895.00
  • Original price $695.00 - Original price $695.00
    Original price
    $695.00
    $695.00 - $695.00
    Current price $695.00

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

    DayStar
    In stock

    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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    Original price $695.00 - Original price $695.00
    Original price
    $695.00
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    Current price $695.00
  • Original price $550.00 - Original price $550.00
    Original price
    $550.00
    $550.00 - $550.00
    Current price $550.00

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

    DayStar
    In stock

    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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    Original price $550.00 - Original price $550.00
    Original price
    $550.00
    $550.00 - $550.00
    Current price $550.00
  • Original price $550.00 - Original price $550.00
    Original price
    $550.00
    $550.00 - $550.00
    Current price $550.00

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

    DayStar
    In stock

    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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    Original price $550.00 - Original price $550.00
    Original price
    $550.00
    $550.00 - $550.00
    Current price $550.00
  • Original price $550.00 - Original price $550.00
    Original price
    $550.00
    $550.00 - $550.00
    Current price $550.00

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

    DayStar
    In stock

    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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    Original price $550.00 - Original price $550.00
    Original price
    $550.00
    $550.00 - $550.00
    Current price $550.00
  • Original price $1,645.00 - Original price $1,645.00
    Original price
    $1,645.00
    $1,645.00 - $1,645.00
    Current price $1,645.00

    DayStar 150mm ERF with 220mm Inside Diameter Cap

    DayStar
    In stock

    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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    Original price $1,645.00 - Original price $1,645.00
    Original price
    $1,645.00
    $1,645.00 - $1,645.00
    Current price $1,645.00
  • Original price $1,645.00 - Original price $1,645.00
    Original price
    $1,645.00
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    Current price $1,645.00

    DayStar 150mm ERF with 210mm Inside Diameter Cap

    DayStar
    In stock

    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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    Original price $1,645.00 - Original price $1,645.00
    Original price
    $1,645.00
    $1,645.00 - $1,645.00
    Current price $1,645.00
  • Original price $1,645.00 - Original price $1,645.00
    Original price
    $1,645.00
    $1,645.00 - $1,645.00
    Current price $1,645.00

    DayStar 150mm ERF with 200mm Inside Diameter Cap

    DayStar
    In stock

    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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    Original price $1,645.00 - Original price $1,645.00
    Original price
    $1,645.00
    $1,645.00 - $1,645.00
    Current price $1,645.00
  • Original price $1,645.00 - Original price $1,645.00
    Original price
    $1,645.00
    $1,645.00 - $1,645.00
    Current price $1,645.00

    DayStar 150mm ERF with 190mm Inside Diameter Cap

    DayStar
    In stock

    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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    Original price $1,645.00 - Original price $1,645.00
    Original price
    $1,645.00
    $1,645.00 - $1,645.00
    Current price $1,645.00
  • Original price $995.00 - Original price $995.00
    Original price
    $995.00
    $995.00 - $995.00
    Current price $995.00

    DayStar 130mm ERF with 190mm Inside Diameter Cap

    DayStar
    In stock

    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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    Original price $995.00 - Original price $995.00
    Original price
    $995.00
    $995.00 - $995.00
    Current price $995.00
  • Original price $1,645.00 - Original price $1,645.00
    Original price
    $1,645.00
    $1,645.00 - $1,645.00
    Current price $1,645.00

    DayStar 150mm ERF with 180mm Inside Diameter Cap

    DayStar
    In stock

    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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    Original price $1,645.00 - Original price $1,645.00
    Original price
    $1,645.00
    $1,645.00 - $1,645.00
    Current price $1,645.00
  • Original price $995.00 - Original price $995.00
    Original price
    $995.00
    $995.00 - $995.00
    Current price $995.00

    DayStar 130mm ERF with 180mm Inside Diameter Cap

    DayStar
    In stock

    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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    Original price $995.00 - Original price $995.00
    Original price
    $995.00
    $995.00 - $995.00
    Current price $995.00
  • Original price $995.00 - Original price $995.00
    Original price
    $995.00
    $995.00 - $995.00
    Current price $995.00

    DayStar 130mm ERF with 170mm Inside Diameter Cap

    DayStar
    In stock

    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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    Original price $995.00 - Original price $995.00
    Original price
    $995.00
    $995.00 - $995.00
    Current price $995.00