Imaging Filters

Isolates the Hydrogen-alpha emission line at a 12nm bandpass Standard 2-inch filter format for modern focusers and filter wheels Dramatically incr...

7nm H-Alpha Bandpass 2-inch Filter Format Isolates Hydrogen Emission Nebulae Blocks Urban Light Pollution Includes Individual Test Report Descr...

Isolates the ionized sulfur (S-II) emission line at 672nm Features a 12nm bandpass to increase contrast Standard 1.25-inch filter format Ideal for...

Isolates the ionized sulfur (S-II) emission line at 672nm Ultra-narrow 6.5nm bandpass for maximum contrast Standard 1.25-inch barrel size fits mos...

Isolates the 672nm Sulfur-II (S-II) emission line 12nm bandpass for high-contrast views 2-inch filter size with standard threads Blocks light poll...

6.5nm Narrow Bandpass Targets the 672nm Ionized Sulfur (S-II) Emission Line 2-inch Barrel Diameter for Larger Focusers Drastically Increases Contr...

2" OIII 8nm (+/-0.4nm) H-alpha 9.5nm (+/- 0.4nm) (originally designed at 10nm, but on a measured basis, it's 9.5nm.)

Complete LRGB Filter Set Includes Luminance, Red, Green, and Blue Filters Standard 1.25" Filter Size Threaded for Standard Filter Wheels and Acces...

Achieve Critical Focus with Dim Stars Transmission >98.5% Across the Visible Spectrum λ/4 Transmitted Wavefront for Image Integrity Parfocal wi...

Suppresses common sources of urban light pollution Enhances contrast for deep-sky objects Improves natural color balance in astrophotography Durab...

Suppresses common light pollution sources Average transmission greater than 90% on key nebula emission lines Blocks light pollution lines with >...

Blocks >99% of primary light pollution emission lines Achieves >90% average transmission on key nebula wavelengths Integrated 300-1100nm UV/...

3nm Bandpass at 656nm Wavelength Maximizes Contrast for Emission Nebulae Extreme Rejection of Light Pollution and Skyglow Ion-Assisted, Anti-Refle...

Isolates the 656nm Hydrogen-alpha emission line 7nm bandpass for maximum contrast Blocks mercury vapor, sodium vapor, and natural skyglow Ideal fo...

H-alpha Filter: 7nm Bandpass centered at 656nm Oxygen-III Filter: 6.5nm Bandpass centered at 500nm Sulphur-II Filter: 6.5nm Bandpass Hubble Pa...

Complete SHO set includes H-alpha, OIII, and SII filters Ultra-narrow 3nm bandpass for maximum contrast Isolates 656nm Ha and 500nm OIII emission ...

Passes infrared light above 685nm Achieves greater than 90% peak transmission Blocks wavelengths from 350-1050nm outside the passband 1.85mm thick...

Dual-bandpass filter isolates H-Alpha, H-Beta, and OIII emission lines Peak transmission of over 90% for maximum signal Blocks over 99% of light p...

Includes L-eXtreme (H-alpha + OIII) and L-Synergy (SII + OIII) filters Enables Hubble Palette (SHO) imaging with one-shot color cameras Captures t...

Narrow dual-bandpass filter for H-Alpha and OIII Blocks >99% of light pollution emission lines Peak transmission of >90% at critical wavelen...

Dual Narrowband H-Alpha & OIII Filter Suppresses Mercury, Sodium & LED Light Pollution Optimized for Fast-Ratio Systems (RASA, HyperStar) ...

Two Optolong Clip-in Light Pollution Filters in One Kit L-Pro: Multi-Bandpass Suppression Across 380-750nm UHC: >99% Blocking of Mercury and So...

Multi-Bandpass Light Pollution Suppression Effective Spectrum from 380-750nm Maintains Natural Color Balance on Broadband Targets High Transmissio...

L-Quad Enhance Filter: A quad-bandpass filter designed for balanced RGB color from broadband targets. L-Para L1 Filter: A dual-narrowband filter...