Skip to content

We're Open, Shipping & Available If You Need Us!

Filters

Items 1 - 25 of 72
Baader 2" Mounted 35 nm H-Alpha CCD Filter

Baader 35 nm Midband H-Alpha CCD Filter - 2" Mounted - FHAL-2

SKU: BAD-FHAL-2
  • Filter Type: H-Alpha
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
Free shipping Free shipping
$199.00
Baader Planetarium 2" H-alpha 7 nm Narrowband Filter

Baader H-Alpha 7 nm Narrowband CCD Filter - 2" Mounted - FHALN-2

SKU: BAD-FHALN-2
  • Filter Type: H-Alpha
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
Free shipping Free shipping
$309.00
Baader 8.5 nm H-Beta Filter

Baader 8.5 nm H-Beta Narrowband CCD Filter - 2" Mounted - FHBN-2

SKU: BAD-FHBN-2
  • Filter Type: H-Beta
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
Free shipping Free shipping
$219.00

Baader LRGB CCD Filter Set - 2" Mounted - FLRGB-2

SKU: BAD-FLRGB-2
  • Filter Type: RGB
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
Free shipping Free shipping
$619.00
Baader Planetarium 2" OIII 8.5 nm Narrowband Filter

Baader OIII 8.5 nm Narrowband CCD Filter - 2" Mounted - FOIIIN-2

SKU: BAD-FOIIIN-2
  • Filter Type: OIII
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
Free shipping Free shipping
$227.00

Baader Planetarium 2" U Filter - FUV-2

SKU: BAD-FUV-2
  • Filter Type: Fringe-Killer/Minus Violet
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
Free shipping Free shipping
$387.00

Baader UV IR-Cut L Filter - 2" Mounted - FUVIR-2

SKU: BAD-FUVIR-2
  • Filter Type: UV/IR/Luminance
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
$132.00
Baader 50.5 mm Round Unmounted UV-IR Cut/L Filter

Baader UV-IR-Cut L Filter - 50.4 mm Round Unmounted - FUVIR-RD50

SKU: BAD-FUVIR-RD50
  • Filter Type: UV/IR/Luminance
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
$156.00

Orion SkyGlow Imaging 2" Filter - 05561

SKU: ORI-05561
  • Filter Type: SkyGlow
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
$159.99
Astronomik 2" CLS Light Pollution Filter

Astronomik CLS Light Pollution Filter 2" - CLS-2

SKU: ASF-CLS-2
  • Filter Type: CLS/LPR
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
Free shipping Free shipping
$159.95

Optolong UHC Filter - 2" Mounted - UHC-200

SKU: OTL-UHC-200
  • Filter Type: UHC
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
Free shipping Free shipping
$85.00

Optolong CLS Filter - 2" Mounted - CLS-200

SKU: OTL-CLS-200
  • Filter Type: CLS/LPR
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
Free shipping Free shipping
$85.00

Optolong L-Pro Filter - 2" Mounted - LPRO-200

SKU: OTL-LPRO-200
  • Filter Type: UV/IR/Luminance
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
Free shipping Free shipping
$199.00

Optolong CLS-CCD Filter - 2" Mounted - CLSCCD-200

SKU: OTL-CLSCCD-200
  • Filter Type: CLS/LPR
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
Free shipping Free shipping
$159.00

Optolong 25nm OIII Filter - 2" Mounted - OIII-200

SKU: OTL-OIII-200
  • Filter Type: OIII
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
Free shipping Free shipping
$108.00

Optolong OIII CCD 6.5nm Filter - 2" Mounted - OIIICCD65-200

SKU: OTL-OIIICCD65-200
  • Filter Type: OIII
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
Free shipping Free shipping
$255.00

Optolong SII CCD 6.5nm Filter - 2" Mounted - SIICCD65-200

SKU: OTL-SIICCD65-200
  • Filter Type: SII
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
Free shipping Free shipping
$250.00
Optolong H-Alpha 7nm Filter - 2"

Optolong H-Alpha 7nm CCD Filter - 2" Mounted - HAL7-200

SKU: OTL-HAL7-200
  • Filter Type: H-Alpha
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
Free shipping Free shipping
$259.00

Optolong LRGB Filter Set - 2" Mounted - LRGB-200

SKU: OTL-LRGB-200
  • Filter Type: RGB
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
Free shipping Free shipping
$359.00
Optolong UBVRI Filter Set

Optolong UBVRI Filter Set - 2" Mounted - UBVRI-200

SKU: OTL-UBVRI-200
  • Filter Type: Photometric (UBVIR, Johnson-Cousins)
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
Free shipping Free shipping
$830.00

Optolong H-Beta 25nm Filter - 2" Mounted - HBTA25-200

SKU: OTL-HBTA25-200
  • Filter Type: H-Beta
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
Free shipping Free shipping
$139.00

Optolong Moon SkyGlow Filter - 2" Mounted - MSG-200

SKU: OTL-MSG-200
  • Filter Type: SkyGlow
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
Free shipping Free shipping
$48.00

Optolong UV-IR Cut Filter - 2" Mounted - UVIR-200

SKU: OTL-UVIR-200
  • Filter Type: UV/IR/Luminance
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
Free shipping Free shipping
$65.00

Optolong Clear Focusing Filter - 2" Mounted - CFF-200

SKU: OTL-CFF-200
  • Filter Type: Clear
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
Free shipping Free shipping
$31.00

Optolong Night Sky H-Alpha Filter - 2" Mounted - NSHA-200

SKU: OTL-NSHA-200
  • Filter Type: H-Alpha
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
Free shipping Free shipping
$119.00

One of the most crucial accessories of astro-imaging is filters. 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.


Deep-space imaging in particular benefits from filters. Far away celestial objects, such as nebulae come to life in your photos with vivid colors. We recommend starting out with an h-alpha filter to filter out broadband light pollution while only allowing a very narrow bandwidth of light to pass through. These are a favorite filter among astrophotographers!


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