Optolong CLS Filters Telescope Mounting Clamp While not intended for visual

While not intended for visual use of the H-alpha line

Manufacturer's Note

The Antlia LRGB V-series PRO Filter 50mm highlight both the spectral gap design between green and red filters to minimize effect of light pollution and high transmittance of useful emission lines which means it remains effective for weaker emission lines from galaxies and nebulae

guiding software

000 light years away from Earth in the constellation of Cygnus

Optolong CLS Filters Telescope Mounting Clamp While not intended for visualThe Optolong CLS (City Light Suppression) broadband filter is designed to improve the visibility of various deepsky objects. By selectively reducing the transmission of wavelengths of light pollutants, specifically those produced by artificial lightings including mercury vapor lamps, both high & low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i. e. skyglow). Together with the highly