Optolong Night Sky H-Alpha filter (IR Pass 650nm) with 50% transition from blocking to passing at about 640nm and 95%

Night Sky H-Alpha filter (IR Pass 650nm) with...

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Optolong narrowband OIII filter is designed for nebula observation allowing 12nm bandwidth of light centered on a wavelength of 500nm through

Optolong narrowband OIII filter is designed f...

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Narrowband H-beta filter is designed for nebula observation allowing 12nm bandwidth of light centered on a wavelength of 486nm through

Narrowband H-beta filter is designed for nebu...

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The CLS-CCD broadband filter is designed to improve the visibility of various deepsky objects

The CLS-CCD broadband filter is designed to i...

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Optolong CLS (City Light Suppression) broadband filter is designed to improve the visibility of various deepsky objects.

The CLS (City Light Suppression) broadband fi...

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ND3.0 neutral density filter to reduce transmission evenly across a portion of a specific spectrum

Neutral density(ND) filters are designed to r...

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Clear focusing filter is designed to highly pass the visible spectral region 420-680nm at 98.5% transmission

Optolong Clear focusing filter is designed to...

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Optolong Photometric UVBRcIc Filters

UBVRI filters are not for astrophotography. I...

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LRGB filter set for Saturn, Jupiter, Mars

The LRGB filter set is designed for maximum c...

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Optolong Moon & Skyglow Filter

Moon & Skyglow filter is designed to darken t...

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Optolong Venus U Filter for Mars

Venus-U filter makes it possible to obtain ph...

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IR Pass685 Planetary Filter

IR Pass 685nm filter is designed to block wav...

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L-eNhance EOS-C clip filter for Canon APS-C camera body

Optolong L-eNhance provides an economical and...

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[2020 NEW] Optolong L-eXtreme dual-band astronomy narrow band filter

Unlike the Optolong L-eNhance filter which is...

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Optolong UHC NK-FF Clip Filter

Optolong UHC with narrower passband provides ...

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