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Filters

19 Items

ZWO 1.25" Duo-Band Filter - DB1.25

SKU: ZWO-DB1.25
  • Filter Type: Multi Narrow Bandpass
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
$99.00
 

ZWO 2" Duo-Band Filter - DB2

SKU: ZWO-DB2
  • Filter Type: Multi Narrow Bandpass
  • Filter Size: 50.8 mm (2")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
$179.00
 
ZWO LRGB Filter Set

ZWO LRGB 1.25" Filter Set - LRGB125

SKU: ZWO-LRGB125
  • Filter Type: RGB
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
$88.00
 

ZWO LRGB 1.25" Premium Filter Set - LRGB125NEW

SKU: ZWO-LRGB125NEW
  • Filter Type: RGB
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
$148.00
 

ZWO 1.25" Low Profile Clear Filter - LPFAR125

SKU: ZWO-LPFAR125
  • Filter Type: Clear
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
$20.00 $16.00
 

ZWO LRGB Filter Set - 31mm Unmounted - LRGB-31

SKU: ZWO-LRGB-31
  • Filter Type: RGB
  • Filter Size: 31 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
$169.00
 

ZWO LRGB Filter Set - 36mm Unmounted - LRGB-36

SKU: ZWO-LRGB-36
  • Filter Type: RGB
  • Filter Size: 36 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
Free shipping Free shipping
$199.00
 

ZWO H-Alpha 7nm CCD Filter - 1.25" - HA125

SKU: ZWO-HA125
  • Filter Type: H-Alpha
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$129.00
 

ZWO H-Alpha 7nm CCD Filter - 31mm - HA31

SKU: ZWO-HA31
  • Filter Type: H-Alpha
  • Filter Size: 31 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$149.00
 

ZWO H-Alpha 7nm CCD Filter - 36mm - HA36

SKU: ZWO-HA36
  • Filter Type: H-Alpha
  • Filter Size: 36 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$169.00
 

ZWO SII 7nm Filter - 1.25" - SII125

SKU: ZWO-SII125
  • Filter Type: SII
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$129.00
 

ZWO SII 7nm Filter - 31mm - SII31

SKU: ZWO-SII31
  • Filter Type: SII
  • Filter Size: 31 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$149.00
 

ZWO SII 7nm Filter - 36mm - SII36

SKU: ZWO-SII36
  • Filter Type: SII
  • Filter Size: 36 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
Free shipping Free shipping
$169.00
 

ZWO OIII 7nm Filter - 1.25" - OIII125

SKU: ZWO-OIII125
  • Filter Type: OIII
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
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$129.00
 

ZWO OIII 7nm Filter - 31mm - OIII31

SKU: ZWO-OIII31
  • Filter Type: OIII
  • Filter Size: 31 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$149.00
 

ZWO OIII 7nm Filter - 36mm - OIII36

SKU: ZWO-OIII36
  • Filter Type: OIII
  • Filter Size: 36 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
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$169.00
 

ZWO 36mm Narrowband Filter Set - OIII, Ha, SII - NBSET-36

SKU: ZWO-NBSET-36
  • Filter Type: Narrowband Set
  • Filter Size: 36 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
Free shipping Free shipping
$479.00
 

ZWO 31mm Narrowband Filter Set - OIII, Ha, SII - NBSET-31

SKU: ZWO-NBSET-31
  • Filter Type: Narrowband Set
  • Filter Size: 31 mm
  • Filter Shape: Round
  • Filter Insert Style: Drop-In
Free shipping Free shipping
$425.00
 

ZWO 1.25" Narrowband Filter Set - OIII, Ha, SII - NBSET-125

SKU: ZWO-NBSET-125
  • Filter Type: Narrowband Set
  • Filter Size: 31.75 mm (1.25")
  • Filter Shape: Round
  • Filter Insert Style: Threaded
Free shipping Free shipping
$369.00
 

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.

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