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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24 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 $ 19.99
Take 15% off w/ code HOLIDAY15
Neutral Density Filter 2" ND 0.9Neutral Density Filter 2" ND 0.9
Explore Scientific
Neutral Density Filter 2" ND 0.9 Sale price$ 59.99
Take 15% off w/ code HOLIDAY15
Nebula Filter CLS 2.0-inchNebula Filter CLS 2.0-inch
Explore Scientific
Nebula Filter CLS 2.0-inch Sale price$ 119.99
Take 15% off w/ code HOLIDAY15
Nebula Filter H-Beta 1.25-inchNebula Filter H-Beta 1.25-inch
Explore Scientific
Nebula Filter H-Beta 1.25-inch Sale price$ 129.99
Take 15% off w/ code HOLIDAY15
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$ 49.99
Take 15% off w/ code HOLIDAY15
Nebula Filter H-Beta 2.0-inchNebula Filter H-Beta 2.0-inch
Explore Scientific
Nebula Filter H-Beta 2.0-inch Sale price$ 179.99
Take 15% off w/ code HOLIDAY15
Nebula Filter CLS 1.25-inchNebula Filter CLS 1.25-inch
Explore Scientific
Nebula Filter CLS 1.25-inch Sale price$ 109.99
Take 15% off w/ code HOLIDAY15
Explore Scientific 2" Variable Polarizing FilterExplore Scientific 2" Variable Polarizing Filter
Explore Scientific
2" Variable Polarizing Filter Sale price$ 169.99
Take 15% off w/ code HOLIDAY15
Explore Scientific Dark-Sky Filter 77mm SlimExplore Scientific Dark-Sky Filter 77mm Slim
Explore Scientific
Dark-Sky Filter 77mm Slim Sale price$ 149.99
Take 15% off w/ code HOLIDAY15
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$ 158.99
Take 15% off w/ code HOLIDAY15
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$ 149.99
Take 15% off w/ code HOLIDAY15
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$ 158.99
Take 15% off w/ code HOLIDAY15
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$ 158.99
Take 15% off w/ code HOLIDAY15
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$ 174.99
Take 15% off w/ code HOLIDAY15
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$ 249.99
Take 15% off w/ code HOLIDAY15
Nebula Filter S-II 2-inch 12nmNebula Filter S-II 2-inch 12nm
Explore Scientific
Nebula Filter S-II 2-inch 12nm Sale price$ 209.99
Take 15% off w/ code HOLIDAY15
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$ 249.99
Take 15% off w/ code HOLIDAY15
Nebula Filter H-Alpha 2-inch 12nmNebula Filter H-Alpha 2-inch 12nm
Explore Scientific
Nebula Filter H-Alpha 2-inch 12nm Sale price$ 198.99
Take 15% off w/ code HOLIDAY15
Nebula Filter H-Alpha 2-inch 7nmNebula Filter H-Alpha 2-inch 7nm
Explore Scientific
Nebula Filter H-Alpha 2-inch 7nm Sale price$ 258.99
Take 15% off w/ code HOLIDAY15
Bresser Single Polarizing Filter 1.25"
Bresser
Single Polarizing Filter 1.25" Sale price$ 49.99
Take 15% off w/ code HOLIDAY15
AstroZap - Baader Solar FiltersAstroZap - Baader Solar Filters
Astrozap
Baader Solar Filters Sale priceFrom $ 70.80
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$ 179.00
Take 15% off w/ code HOLIDAY15
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$ 239.00
Take 15% off w/ code HOLIDAY15
Explore Scientific 1.25" Variable Polarizing FilterExplore Scientific 1.25" Variable Polarizing Filter
Explore Scientific
Explore Scientific 1.25" Variable Polarizing Filter Sale price$ 58.99
Take 15% off w/ code HOLIDAY15

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