Filters & Filter Wheels

This economical Astro-Tech ND9 neutral gray filter reduces the brightness and glare that can mask low contrast details during lunar and planetary v...

This #23A light red Astro-Tech 1.25" eyepiece filter is useful when observing Mercury and Venus during the day and at twilight and when observing M...

If you have a scope 6" in aperture and under, this Astro-Tech #56 light green 1.25" eyepiece filter is a useful tool for observing different featur...

This Antares ND9 (neutral density 0.9) gray filter reduces the brightness and glare that can mask low contrast details during lunar and planetary o...

This #21 orange Astro-Tech 1.25" eyepiece filter is useful in improving contrast when observing the Moon and all planets out to Saturn in telescope...

This #12 medium yellow Astro-Tech 1.25" eyepiece filter is helpful in improving lunar and Martian contrast in telescopes 4" to 8" in aperture, part...

If you have a big scope (8" in aperture and larger), this Astro-Tech #47 violet 1.25" eyepiece filter can help detect high clouds and haze over the...

The Optolong 2" L-Pro light pollution filter is a great way to suppress the issues caused by all these lights that are all around us. This mounted ...

Take back the night sky by using the Optolong L-eXtreme 2" Dual Passband filter when imaging. Take your backyard imaging to places you never though...

Take back the night sky by using the Optolong L-eNhance 2" Tri-band filter when imaging. A convenient and economic way to eNhance your nightly pass...

This 2" Celestron ultra high contrast (UHC) light pollution filter blocks out most unwanted light pollution, making it easier to pick out faint neb...

This medium green 22mm clear aperture 1.25" eyepiece filter reduces irradiation, glare, and excess image brightness in lunar observing. It also imp...

This Astro-Tech #58 dark green 1.25" eyepiece filter is very helpful when observing the Moon and Mars, plus enhances a variety of features on all t...

This Celestron ultra high contrast (UHC) light pollution filter has improved contrast when compared with the wider passband of a broadband filter, ...

Very steep cut-off slopes and a narrow passband make this 2" Thousand Oaks H-Beta filter ideal for viewing certain very faint emission nebulas like...

Take back the night sky by using the Optolong L-eNhance 1.25" Tri-Band filter when imaging. A convenient and economic way to eNhance your nightly p...

The H-Alpha 7nm from Optolong works fantastically as a photographic filter, but also works for viewing faint emission nebula. Optolong filters are ...

This filter is designed to specifically enhance your Origin experience. Get the Most Out of Your Origin: Enhance your Celestron Origin’s views an...

The Optolong 1.25" L-Pro light pollution filter is a great way to suppress the issues caused by all these lights that are all around us. This mount...

This new Celestron 2" Oxygen III light pollution line filter isolates the two glowing emission lines of doubly-ionized oxygen (at 4959 Ångstroms an...

This Celestron Oxygen III light pollution filter has a very narrow passband for very high contrast on emission nebulas, making it a good choice for...