Filters

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

Features Take beautiful images of deep-sky objects from light-polluted suburban locations with the Rowe-Ackermann Schmidt Astrograph 11 (RASA 11) u...

Features Enhance your 8" Rowe-Ackermann Schmidt Astrograph (RASA) by blocking light pollution, improving image contrast, and darkening the sky back...

Features Reduce glare and increase contrast of the Moon with the Celestron 1.25" Moon Filter Also useful for extra bright planets as well as terres...

Features Reduces brightness and cuts glare, increasing clarity of the Moon, Venus, and bright double stars 13% light transmission Provides a true c...

FeaturesThe 1-1/4" OIII narrowband filter isolates just the two doubly-ionized oxygen lines (496 and 501nm lines) emitted by planetary and emission...

Features The 2" OIII narrowband filter isolates the two doubly-ionized oxygen lines (496 and 501 nm lines) Filter has ultra-hard, vacuum-deposited ...

FeaturesOur 1-1/4" Light Pollution Reduction (LPR) Filters are designed to selectively reduce the transmission of certain wavelengths of light, spe...

FeaturesOur 2" Light Pollution Reduction (LPR) Filters are designed to selectively reduce the transmission of certain wavelengths of light, specifi...

Features A customizable way to reduce brightness and glare on the brightest celestial objects like the Moon, Venus, and bright double stars Adjust ...

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-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...