Optical Filters

Enhance your celestial and terrestrial observations with Explore Scientific’s range of optical filters. Designed to improve contrast, reduce glare, and bring out subtle details, these filters are essential tools for both visual astronomers and astrophotographers. From light pollution reduction to specialized color filters, our collection helps you see and capture the night sky like never before.

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32 products

Sun Catcher Variable Large Aperture Solar FilterSun Catcher Variable Large Aperture Solar Filter
Explore Scientific
Sun Catcher Variable Large Aperture Solar Filter Sale priceFrom $29.00
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Neutral Density Filter 2" ND 0.9Neutral Density Filter 2" ND 0.9
Explore Scientific
Neutral Density Filter 2" ND 0.9 Sale price$85.00
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Nebula Filter CLS 2.0-inchNebula Filter CLS 2.0-inch
Explore Scientific
Nebula Filter CLS 2.0-inch Sale price$169.00
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Nebula Filter UHC 1.25-inchNebula Filter UHC 1.25-inch
Explore Scientific
Nebula Filter UHC 1.25-inch Sale price$155.00
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Nebula Filter H-Beta 1.25-inchNebula Filter H-Beta 1.25-inch
Explore Scientific
Nebula Filter H-Beta 1.25-inch Sale price$183.00
Save $27.00
Neutral Density Filter 1.25" ND 0.9Neutral Density Filter 1.25" ND 0.9
Explore Scientific
Neutral Density Filter 1.25" ND 0.9 Sale price$44.00 Regular price$71.00
Save $50.00
Nebula Filter H-Beta 2.0-inchNebula Filter H-Beta 2.0-inch
Explore Scientific
Nebula Filter H-Beta 2.0-inch Sale price$204.00 Regular price$254.00
Save $35.00
Nebula Filter CLS 1.25-inchNebula Filter CLS 1.25-inch
Explore Scientific
Nebula Filter CLS 1.25-inch Sale price$120.00 Regular price$155.00
Save $50.00
Explore Scientific 2" Variable Polarizing FilterExplore Scientific 2" Variable Polarizing Filter
Explore Scientific
2" Variable Polarizing Filter Sale price$204.00 Regular price$254.00
Save $64.00
Explore Scientific Dark-Sky Filter 77mm SlimExplore Scientific Dark-Sky Filter 77mm Slim
Explore Scientific
Dark-Sky Filter 77mm Slim Sale price$190.00 Regular price$254.00
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Nebula Filter Oxygen III 1.25-inch 6.5nmNebula Filter Oxygen III 1.25-inch 6.5nm
Explore Scientific
Nebula Filter Oxygen III 1.25-inch 6.5nm Sale price$226.00
Save $43.00
Nebula Filter S-II 1.25-inch 12nmNebula Filter S-II 1.25-inch 12nm
Explore Scientific
Nebula Filter S-II 1.25-inch 12nm Sale price$183.00 Regular price$226.00
Save $85.00
Nebula Filter S-II 1.25-inch 6.5nmNebula Filter S-II 1.25-inch 6.5nm
Explore Scientific
Nebula Filter S-II 1.25-inch 6.5nm Sale price$197.00 Regular price$282.00
Save $68.00
Nebula Filter H-Alpha 1.25-inch 12nmNebula Filter H-Alpha 1.25-inch 12nm
Explore Scientific
Nebula Filter H-Alpha 1.25-inch 12nm Sale price$158.00 Regular price$226.00
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Nebula Filter H-Alpha 1.25-inch 7nmNebula Filter H-Alpha 1.25-inch 7nm
Explore Scientific
Nebula Filter H-Alpha 1.25-inch 7nm Sale price$247.00
Nebula Filter Oxygen III 2-inch 6.5nmNebula Filter Oxygen III 2-inch 6.5nm
Explore Scientific
Nebula Filter Oxygen III 2-inch 6.5nm Sale price$352.00
Save $98.00
Nebula Filter S-II 2-inch 12nmNebula Filter S-II 2-inch 12nm
Explore Scientific
Nebula Filter S-II 2-inch 12nm Sale price$254.00 Regular price$352.00
Save $119.00
Nebula Filter S-II 2-inch 6.5nmNebula Filter S-II 2-inch 6.5nm
Explore Scientific
Nebula Filter S-II 2-inch 6.5nm Sale price$303.00 Regular price$422.00
Save $105.00
Nebula Filter H-Alpha 2-inch 12nmNebula Filter H-Alpha 2-inch 12nm
Explore Scientific
Nebula Filter H-Alpha 2-inch 12nm Sale price$247.00 Regular price$352.00
Save $105.00
Nebula Filter H-Alpha 2-inch 7nmNebula Filter H-Alpha 2-inch 7nm
Explore Scientific
Nebula Filter H-Alpha 2-inch 7nm Sale price$317.00 Regular price$422.00
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Bresser Single Polarizing Filter 1.25"
Bresser
Single Polarizing Filter 1.25" Sale price$71.00
Solar Filter/Sun Shade for Galileoscope Refractor Telescope STEM KitSolar Filter/Sun Shade for Galileoscope Refractor Telescope STEM Kit
Explore Scientific
Solar Filter/Sun Shade for Galileoscope Refractor Telescope STEM Kit Sale price$9.00
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OPTOLONG 1.25" L-eNhance Deep-Sky Light Pollution FilterOPTOLONG 1.25" L-eNhance Deep-Sky Light Pollution Filter
Optolong
1.25" L-eNhance Deep-Sky Light Pollution Filter Sale price$252.00
OPTOLONG 1.25" L-eXtreme Deep-Sky Light Pollution FilterOPTOLONG 1.25" L-eXtreme Deep-Sky Light Pollution Filter
Optolong
1.25" L-eXtreme Deep-Sky Light Pollution Filter Sale price$337.00
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OPTOLONG 2" L-Pro Deep-Sky Light Pollution FilterOPTOLONG 2" L-Pro Deep-Sky Light Pollution Filter
Optolong
2" L-Pro Deep-Sky Light Pollution Filter Sale price$280.00
Explore Scientific 1.25" Variable Polarizing FilterExplore Scientific 1.25" Variable Polarizing Filter
Explore Scientific
Explore Scientific 1.25" Variable Polarizing Filter Sale price$83.00
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Nebula Filter Oxygen III 2.0-inchNebula Filter Oxygen III 2.0-inch
Explore Scientific
Nebula Filter Oxygen III 2.0-inch Sale price$197.00
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Nebula Filter Oxygen III 1.25-inchNebula Filter Oxygen III 1.25-inch
Explore Scientific
Nebula Filter Oxygen III 1.25-inch Sale price$155.00
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Nebula Filter UHC 2.0-inchNebula Filter UHC 2.0-inch
Explore Scientific
Nebula Filter UHC 2.0-inch Sale price$197.00
OPTOLONG 2" L-eXtreme Deep-Sky Light Pollution FilterOPTOLONG 2" L-eXtreme Deep-Sky Light Pollution Filter
Optolong
2" L-eXtreme Deep-Sky Light Pollution Filter Sale price$435.00
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OPTOLONG 2" L-eNhance Deep-Sky Light Pollution FilterOPTOLONG 2" L-eNhance Deep-Sky Light Pollution Filter
Optolong
2" L-eNhance Deep-Sky Light Pollution Filter Sale price$323.00
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OPTOLONG 1.25" L-Pro Deep-Sky Light Pollution FilterOPTOLONG 1.25" L-Pro Deep-Sky Light Pollution Filter
Optolong
1.25" L-Pro Deep-Sky Light Pollution Filter Sale price$210.00

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