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.

Filters
Sort by:

31 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 $30.00
Sold out
Neutral Density Filter 2" ND 0.9Neutral Density Filter 2" ND 0.9
Explore Scientific
Neutral Density Filter 2" ND 0.9 Sale price$88.00
Sold out
Nebula Filter CLS 2.0-inchNebula Filter CLS 2.0-inch
Explore Scientific
Nebula Filter CLS 2.0-inch Sale price$175.00
Sold out
Nebula Filter UHC 1.25-inchNebula Filter UHC 1.25-inch
Explore Scientific
Nebula Filter UHC 1.25-inch Sale price$160.00
Sold out
Nebula Filter H-Beta 1.25-inchNebula Filter H-Beta 1.25-inch
Explore Scientific
Nebula Filter H-Beta 1.25-inch Sale price$189.00
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$73.00
Sold out
Nebula Filter H-Beta 2.0-inchNebula Filter H-Beta 2.0-inch
Explore Scientific
Nebula Filter H-Beta 2.0-inch Sale price$262.00
Sold out
Nebula Filter CLS 1.25-inchNebula Filter CLS 1.25-inch
Explore Scientific
Nebula Filter CLS 1.25-inch Sale price$160.00
Sold out
Explore Scientific 2" Variable Polarizing FilterExplore Scientific 2" Variable Polarizing Filter
Explore Scientific
2" Variable Polarizing Filter Sale price$247.00
Sold out
Explore Scientific Dark-Sky Filter 77mm SlimExplore Scientific Dark-Sky Filter 77mm Slim
Explore Scientific
Dark-Sky Filter 77mm Slim Sale price$218.00
Sold out
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$233.00
Sold out
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$218.00
Sold out
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$233.00
Sold out
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$233.00
Sold out
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$255.00
Sold out
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$364.00
Sold out
Nebula Filter S-II 2-inch 12nmNebula Filter S-II 2-inch 12nm
Explore Scientific
Nebula Filter S-II 2-inch 12nm Sale price$306.00
Sold out
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$364.00
Sold out
Nebula Filter H-Alpha 2-inch 12nmNebula Filter H-Alpha 2-inch 12nm
Explore Scientific
Nebula Filter H-Alpha 2-inch 12nm Sale price$290.00
Sold out
Nebula Filter H-Alpha 2-inch 7nmNebula Filter H-Alpha 2-inch 7nm
Explore Scientific
Nebula Filter H-Alpha 2-inch 7nm Sale price$377.00
Sold out
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$6.00
Sold out
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$261.00
Sold out
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$348.00
Sold out
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$290.00
Sold out
Explore Scientific 1.25" Variable Polarizing FilterExplore Scientific 1.25" Variable Polarizing Filter
Explore Scientific
Explore Scientific 1.25" Variable Polarizing Filter Sale price$86.00
Sold out
Nebula Filter Oxygen III 2.0-inchNebula Filter Oxygen III 2.0-inch
Explore Scientific
Nebula Filter Oxygen III 2.0-inch Sale price$204.00
Sold out
Nebula Filter Oxygen III 1.25-inchNebula Filter Oxygen III 1.25-inch
Explore Scientific
Nebula Filter Oxygen III 1.25-inch Sale price$160.00
Sold out
Nebula Filter UHC 2.0-inchNebula Filter UHC 2.0-inch
Explore Scientific
Nebula Filter UHC 2.0-inch Sale price$204.00
Sold out
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$449.00
Sold out
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$333.00
Sold out
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$217.00

Free United States Shipping

Orders $70+ shipped within the continental United States qualify for free standard shipping. Learn more.

Explore Scientific Warranty

Register your product within 60 days to activate your warranty coverage. Learn more.

30 Day Returns

Returns are accepted within 30 days if the item is in original condition. Learn more.

Dedicated Customer Support

Our customer service team is here to help with product support and warranty service. Learn more.