Filters

Targets modern LED and broadband light pollution Optimized blue transmission to reject artificial skyglow Serves as a "pre-filter" for finding obj...

Blocks unwanted UV and IR wavelengths for sharper stars Optimized for modern CMOS sensors to prevent star bloat Serves as a high-transmission Lumi...

Delivers the absolute highest contrast views of many diffuse and planetary nebula. For many objects, the Baader O-III reveals a level of intricate ...

Reduces overwhelming brightness and glare from the Moon Enhances contrast to reveal finer surface details Threads directly onto most standard 1.25...

Reduces overwhelming brightness from the Moon and bright planets Transmits only 13% of incoming light for comfortable viewing Fits all standard 1....

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...

Selectively blocks mercury vapor, sodium vapor, and natural sky glow Achieves over 97% transmission of critical nebula emission lines Features a m...

Selectively blocks light pollution from mercury and sodium vapor lights Achieves over 97% light transmission for maximum brightness 60nm bandpass ...

Adjustable light transmission from 1% to 40% Standard 1.25” filter format fits most eyepieces Reduces brightness without altering an object's natu...

Blue photometric filter in UVBRI series Filters designed for use with CCD and for f/4.0 or slower No reflections leading to image distortions or ""...

Blue filter for color rendering with RGB set Filters designed for use with CCD and for f/4.0 or slower No reflections leading to image distortions ...

Filters designed for use with CCD and for f/4.0 or slower No reflections leading to image distortions or "back reflections" Transmitted wavefront ...

Green filter for color rendering with RGB set Filters designed for use with CCD and for f/4.0 or slower No reflections leading to image distortions...

H-alpha filters are essential for imaging nebulae and other objects which are rich in ionized hydrogen. At 656.3nm, a narrow-band emission filter i...

H-alpha filters are essential for imaging nebulae and other objects which are rich in ionized hydrogen. At 656.3nm, a narrow-band emission filter i...

H-alpha filters are essential for imaging nebulae and other objects which are rich in ionized hydrogen. At 656.3nm, a narrow-band emission filter i...

H-alpha filters are essential for imaging nebulae and other objects which are rich in ionized hydrogen. At 656.3nm, a narrow-band emission filter i...

H-beta filters are also useful for imaging nebulae and objects rich in ionized hydrogen. At 486.1nm, a narrow-band filter is required to separate H...

H-beta filters are also useful for imaging nebulae and objects rich in ionized hydrogen. At 486.1nm, a narrow-band filter is required to separate H...

8nm H-alpha, Luminance, Red, Green, and Blue astronomy filter set Filters designed for use with CCD and for f/4.0 or slower No reflections leading ...

NIR photometric filter in UVBRI series Filters designed for use with CCD and for f/4.0 or slower No reflections leading to image distortions or ""b...

Methane absorption band filter. This filter enhances contrast when imaging objects containing significant levels of methane. Methane-rich component...

Blocks common spectral lines from lighting sources. This filter provides balanced color for the visible spectrum while blocking most emission from ...