FREE SHIPPING

On Hundreds of Products details ›

CALL US TOLL FREE 800-266-9590

Filters

Back to Top
per page
  • Astronomik 31 mm CLS Light Pollution Filter
    Astronomik Filters Astronomik CLS Light Pollution Filter - 31 mm Round - CLS-31
    $95.95
    Bread Checkout
     

    free shipping
  • Optolong Optolong OIII CCD 6.5nm Filter - 31mm Unmounted - OIIICCD65-31U
    $189.00
    Bread Checkout
     

    free shipping
  • Optolong SII Unmounted Filter
    Optolong Optolong SII CCD 12nm Filter - 31mm Unmounted - SIICCD12-31U
    $153.00 $125.00
    Bread Checkout
     

    free shipping
  • Optolong SII Unmounted Filter
    Optolong Optolong SII CCD 6.5nm Filter - 31mm Unmounted - SIICCD65-31U
    $193.00
    Bread Checkout
     

    free shipping
  • Optolong H-Alpha Unmounted Filter
    Optolong Optolong H-Alpha 7nm CCD Filter - 31mm Unmounted - HAL7-31U
    $190.00
    Bread Checkout
     

    free shipping
  • Optolong UVIR Cut Unmounted Filter
    Optolong Optolong UV-IR Cut Filter - 31mm Unmounted - UVIR-31U
    $55.00
    Bread Checkout
     

    free shipping
  • ZWO Astronomy Cameras ZWO H-Alpha 7nm CCD Filter - 31mm - HA31
    $149.00
    Bread Checkout
     

    free shipping
  • ZWO Astronomy Cameras ZWO SII 7nm Filter - 31mm - SII31
    $149.00
    Bread Checkout
     

    free shipping
  • ZWO Astronomy Cameras ZWO OIII 7nm Filter - 31mm - OIII31
    $149.00
    Bread Checkout
     

    free shipping
  • Astronomik 31 mm Round Mounted MC Clear Glass Filter
    Astronomik Filters Astronomik MC Clear Glass Filter - 31 mm Round - C-31
    $49.95
    Bread Checkout
     

    free shipping
  • Astronomik Filters Astronomik CLS-CCD Light Pollution Filter - 31 mm Round - CLSCCD-31
    $109.95
    Bread Checkout
     

    free shipping
  • Astronomik 31 mm Round H-Alpha 12 nm CCD Filter
    Astronomik Filters Astronomik H-Alpha 12 nm CCD Filter - 31 mm Round - HA12-31
    $169.95
    Bread Checkout
     

    free shipping
  • Astronomik 6 nm H-Alpha Filter in 31 mm Format
    Astronomik Filters Astronomik H-Alpha 6 nm CCD Filter - 31 mm Round - HA6-31
    $249.95
    Bread Checkout
     

    free shipping
  • Astronomik 31 mm Round UHC Filter
    Astronomik Filters Astronomik UHC Filter - 31 mm Round - UHC-31
    $109.95
    Bread Checkout
     

    free shipping
  • Astronomik OIII 12 nm CCD Filter - 31 mm Round
    Astronomik Filters Astronomik OIII 12 nm CCD Filter - 31 mm Round - OIIICCD-31
    $169.95
    Bread Checkout
     

    free shipping
  • Astronomik 31 mm Round SII 12 nm CCD Filter
    Astronomik Filters Astronomik SII 12 nm CCD Filter - 31 mm - SII-31
    $169.95
    Bread Checkout
     

    free shipping
  • Astronomik OIII 6 nm CCD Filter - 31 mm Round
    Astronomik Filters Astronomik OIII 6 nm CCD Filter - 31 mm Round - OIIICCD6-31
    $249.95
    Bread Checkout
     

    free shipping
  • Astronomik 31 mm Round SII 6 nm CCD Filter
    Astronomik Filters Astronomik SII 6 nm CCD Filter - 31 mm - SII6-31
    $249.95
    Bread Checkout
     

    free shipping
  • Astronomik 31 mm L-1 UV-IR Blocking Filter
    Astronomik Filters Astronomik L-1 UV-IR Blocking Filter - 31 mm Round - L1-31
    $79.95
    Bread Checkout
     

    free shipping
  • Astronomik L-2 UV-IR Blocker - 31 mm Round
    Astronomik Filters Astronomik L-2 UV-IR Blocking Filter - 31 mm Round - L2-31
    $69.95
    Bread Checkout
     

    free shipping
  • Astronomik 31 mm L-3 Luminance UV-IR Blocking Filter
    Astronomik Filters Astronomik L-3 UV-IR Blocking Filter - 31 mm Round - L3-31
    $79.95
    Bread Checkout
     

    free shipping
  • Astronomik 31 mm Round ProPlanet 642 IR-Pass Filter
    Astronomik Filters Astronomik ProPlanet 642 IR Pass Filter - 31 mm Round - P642-31
    $79.95
    Bread Checkout
     

    free shipping
  • Astronomik ProPlanet 742 IR-Pass 31 mm Round Filter
    Astronomik Filters Astronomik ProPlanet 742 IR Pass Filter - 31 mm Round - P742-31
    $59.95
    Bread Checkout
     

    free shipping
  • Astronomik ProPlanet 807 IR-Pass Filter - 31 mm Round
    Astronomik Filters Astronomik ProPlanet 807 IR Pass Filter - 31 mm Round - P807-31
    $55.95
    Bread Checkout
     

    free shipping
  • Baader Planetarium 31 mm Round Unmounted UV-IR Cut Luminance Filter
    Baader Planetarium Baader 31 mm UV-IR Cut L-Filter - FUVIR-RD31
    $60.00
    Bread Checkout
     

    No free shipping.
  • Astronomik 31 mm Round UHC-E Filter
    Astronomik Filters Astronomik UHC-E Filter - 31 mm Round - UHCE-31
    $75.95
    Bread Checkout
     

    free shipping
  • Astronomik 31 mm Round Color Filter - Red
    Astronomik Filters Astronomik Red Type 2c Filter - 31 mm Round - R-31
    $89.95
    Bread Checkout
     

    free shipping
  • Astronomik 31 mm Round Color Filter - Green
    Astronomik Filters Astronomik Green Type 2c Filter - 31 mm Round - G-31
    $89.95
    Bread Checkout
     

    free shipping
  • Astronomik 31 mm Round Color Filter - Blue
    Astronomik Filters Astronomik Blue Type 2c Filter - 31 mm Round - B-31
    $89.95
    Bread Checkout
     

    free shipping
  • Astrodon Narrowband Filters
    Astrodon Astrodon 3 nm H-Alpha Narrowband Filter - 31 mm Unthreaded Insert - HA3-31R
    $574.00
    Bread Checkout
     

    free shipping
  • Astrodon 31 mm Unthreaded 3 nm OIII Narrowband Filter
    Astrodon Astrodon 3 nm OIII Narrowband Filter - 31 mm Unthreaded Insert - OIII3-31R
    $574.00
    Bread Checkout
     

    free shipping
  • Astrodon 1.25
    Astrodon Astrodon Clear Filter with UV-Blocking Only - 31 mm Unthreaded Insert - C2-31R
    $183.00
    Bread Checkout
     

    free shipping
  • Astrodon 31 mm Unthreaded Luminance Filter with UV/NIR Blocking
    Astrodon Astrodon Luminance UV/NIR Blocking Filter - 31 mm Unthreaded Insert - L2-31R
    $194.00
    Bread Checkout
     

    free shipping
  • Astrodon Narrowband Filters
    Astrodon Astrodon 5 nm H-Alpha Narrowband Filter - 31 mm Unthreaded Insert - HA5-31R
    $390.00
    Bread Checkout
     

    free shipping
  • Astrodon SII 5 nm Narrowband Filter - 31 mm Unthreaded
    Astrodon Astrodon 5 nm SII Narrowband Filter - 31 mm Unthreaded Insert - SII5-31R
    $390.00
    Bread Checkout
     

    free shipping
  • Astrodon 31 mm Unthreaded OIII Narrowband Filter - 5 nm
    Astrodon Astrodon 5 nm OIII Narrowband Filter - 31 mm Unthreaded Insert - OIII5-31R
    $390.00
    Bread Checkout
     

    free shipping
  • Astrodon Narrowband Filters
    Astrodon Astrodon 5 nm Red Continuum Narrowband Filter - 31 mm Unthreaded Insert - REDCON5-31R
    $390.00
    Bread Checkout
     

    free shipping
  • Astrodon Narrowband Filters
    Astrodon Astrodon 3 nm SII Narrowband Filter - 31 mm Unthreaded Insert - SII3-31R
    $574.00
    Bread Checkout
     

    free shipping
  • Astrodon Narrowband Filters
    Astrodon Astrodon 3 nm NII Narrowband Filter - 31 mm Unthreaded Insert - NII3-31R
    $574.00
    Bread Checkout
     

    free shipping
  • Astrodon 31 mm Unthreaded E-Series Tru-Balance Red
    Astrodon Astrodon E-Series Tru-Balance Red Filter - 31 mm Unthreaded Insert - R2-E31R
    $194.00
    Bread Checkout
     

    No free shipping.
Back to Top
per page
Your new telescope finally arrived- you opened the box and assembled the scope as carefully as you can. Once darkness falls, the first thing you do is point it up at the Moon and look into the eyepiece. Wow. But if you can imagine, the Moon actually can appear better than that when properly filtered. Telescopes have the ability to attach filters for many different purposes - some of the most common filters are for looking at the Moon, Planets, and Sun.


Eyepiece filters are an invaluable aid in lunar and planetary observing. They reduce glare and light scattering, increase contrast through selective filtration, increase definition and resolution, reduce irradiation and lessen eye fatigue. Different filters will act differently, highlighting a rainbow of wavelengths to enhance a variety of features in the night sky.


We offer deep sky filters and planetary filters from Lumicon, Baader Planetarium, Celestron, TeleVue, Meade, Orion, High Point & Thousand Oaks. Telescope filters will add to the performance of virtually any telescope and are a highly recommended telescope accessory. Feel free to contact one of our telescope experts for advice on selecting the filter assortment that is right for you.

High Point Scientific is rated 4.9/5 based on 1347 reviews

Please wait...