Visual Filters

2" Filter Barrel Size Continuously Variable Brightness Ideal for Lunar, Planetary, and Solar Observing Neutral Gray Color Rendition Stackable with...

2.0-inch Barrel Size Isolates Hydrogen-Beta (H-Beta) Emission Line Dramatically Increases Contrast on Specific Nebulae Blocks Artificial Light Pol...

ND 0.9 Optical Density 1.25" Barrel Diameter Reduces Glare for Lunar Observing Aids in Splitting Unequal Double Stars Uniform Light Transmission A...

Enhances contrast on lunar and planetary features Reduces glare for more comfortable viewing Improves detail in Martian polar caps and dust storms...

ND13Lumicon Neutral Density 13 Filter will tone down the glare from the full Moon and allow more planetary detail than ever! Lumicon ND13 transmits...

Variable brightness control for solar viewing Available in 1.25" and 2" barrel sizes Threads directly onto standard eyepieces Engineered for use w...

Blocks over 99% of common light pollution emission lines Maintains over 90% average transmission for bright, detailed views λ/4 transmitted wavefr...

18nm Bandpass Centered on OIII Emission Lines (500nm) Greater than 80% Average Light Transmission (Tave) Blocks >99% of Major Light Pollution L...

Reduces skyglow from artificial and natural light pollution Blocks >99% of mercury vapor and sodium vapor light Passes key nebula emission line...

Continuously Variable Light Transmission Available in 1.25" and 2" Barrel Sizes Ideal for Lunar, Planetary, and Terrestrial Viewing Reduces Glare ...

Reduces light transmission to a comfortable 13% for lunar viewing Standard 1.25-inch barrel size fits most eyepieces and accessories Threads into ...

Reduces glare for comfortable lunar and planetary observing Fits any standard 1.25" eyepiece or accessory Standard M28.5x0.6 filter threads Enhanc...

2-inch diameter filter for standard eyepieces and accessories 18nm bandpass isolates key Oxygen-III emission lines 90% peak transmittance at 495.9...

Available in 1.25" and 2" barrel sizes Continuously variable light transmission Reduces glare for enhanced lunar and planetary contrast Constructe...

Targets the 486nm Hydrogen-Beta emission line 25nm bandpass for enhanced contrast 80% peak transmittance at the H-Beta wavelength Blocks Mercury (...

Reduces lunar glare with a fixed ND0.6 optical density Transmits a neutral 25% of incoming light Standard 1.25-inch barrel fits most eyepieces Mul...

Reduces lunar brightness by ~87.5% (ND0.9) Fits any standard 1.25-inch eyepiece or accessory Neutral density filter preserves true color balance F...

Reduces Lunar Glare with ND1.2 Density Transmits 6.25% of Incoming Light Standard 1.25-inch Barrel Threads Fully Multi-Coated Optical Glass Neutra...

ND3.0 Neutral Density Filter Standard 1.25-inch Barrel Size Transmits 0.1% of Incoming Light (10-Stop / 1000× Reduction) Ideal for Herschel Solar ...

7-Piece Filter Set Includes Moon, CPL, and 5 Color Filters Standard 1.25-inch Barrel Size M28.5*0.6 Filter Threads 2mm Thick Optical Glass Desc...

Filter Type: Hydrogen-Beta (Hβ) Narrowband Available Sizes: 1.25" and 2" Mounted Primary Targets: Horsehead Nebula, California Nebula Manufacturin...

Unique Narrowband Design: Transmits both Hβ and OIII emission lines in a single, targeted passband for maximum contrast. Blocks Red Wavelengths:...

Isolates doubly ionized oxygen (OIII) emission lines Dramatically increases contrast on planetary nebulae and supernova remnants Manufactured by A...