Nebula Filters

Enhances 8 key nebular emission lines for visual use Peak transmission of 95% at H-beta, OIII, NII, H-alpha, and SII wavelengths Recommended for l...

Passes the H-beta (486.1nm) and both OIII (495.9nm, 500.7nm) emission lines Peak transmission greater than 90% at 486.1nm, 495.9nm, and 500.7nm OD...

Targets C2 Swan Bands in comet gas tails 15nm bandpass for high-contrast views Blocks the adjacent O-III line, which is not strong in comet tails ...

Isolates doubly-ionized oxygen lines (496nm and 501nm) Provides extreme contrast for planetary and emission nebulae Blocks the entire visual spect...

Isolates the 496nm and 501nm Oxygen III wavelengths Blocks the entire visual spectrum from 400nm to 700nm Ultra-hard, vacuum-deposited coatings pr...

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

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...

1.25" and 2" sizes for standard eyepieces and accessories 18nm bandpass isolates key Oxygen-III emission lines 90% peak transmittance at 495.9nm a...

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

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...