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IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.

Optolong CLS Light Pollution Filters

Optolong CLS light pollution filters are broadband filters that cut the light of common streetlights while passing most of the emission from nebulae. The line has two versions: the CLS, intended for DSLR and mirrorless cameras that keep their internal IR-cut filter, and the CLS-CCD, which adds infrared blocking for astronomy cameras without one.

They are a simple first filter for color imaging or visual use from suburban skies, with a mild color shift that is easy to balance in processing.

Filters

Optolong CLS Light Pollution Filter
$55.00 - $85.00
$55.00 - $85.00
$55.00 - $85.00
$55.00

Optolong CLS Light Pollution Filter

Options available

Suppresses common light pollution sources Average transmission greater than 90% on key nebula emission lines Blocks light pollution lines with >...

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$55.00 - $85.00
$55.00 - $85.00
$55.00 - $85.00
$55.00
Optolong CLS-CCD Light Pollution Filter
$95.00 - $159.00
$95.00 - $159.00
$95.00 - $159.00
$95.00

Optolong CLS-CCD Light Pollution Filter

Options available

Blocks >99% of primary light pollution emission lines Achieves >90% average transmission on key nebula wavelengths Integrated 300-1100nm UV/...

View full details
$95.00 - $159.00
$95.00 - $159.00
$95.00 - $159.00
$95.00