The Optolong Moon & Skyglow filter is designed to darken the background sky by blocking light transmission from skyglow 589nm and many street light emissions from artificial light.
The 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
The UHC (Ultra High Contrast) broadband filter is designed to improve the visibility of various deepsky objects by selectively reducing the transmission of wavelengths of light pollutants
UV-IR cut filter is designed for ultraviolet and infrared wavelength blocking to improve sharpness of the image as most of the optics are designed for the visible spectrum
The Optolong Moon & Skyglow filter is designed to darken the background sky by blocking light transmission from skyglow 589nm and many street light emissions from artificial light.
The 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
The UHC (Ultra High Contrast) broadband filter is designed to improve the visibility of various deepsky objects by selectively reducing the transmission of wavelengths of light pollutants
The CLS-CCD 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
The 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
UV-IR cut filter is designed for ultraviolet and infrared wavelength blocking to improve sharpness of the image as most of the optics are designed for the visible spectrum
The 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
The L-Pro (L-Professional) 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
The CLS-CCD 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
The Optolong extra Narrowband OIII-CCD 6.5nm filter is designed for nebula observation allowing 6.5nm bandwidth of light centered on a wavelength of 500nm through, which corresponds to OIII emission lines, and reducing the transmission of certain wavelengths of light
Optolong extra narrowband SII-CCD 6.5nm filter (Sulful II for CCD) is designed for nebula observation allowing 6.5nm bandwidth of light centered on a wavelength of 672nm through, and reducing the transmission of certain wavelengths
The CLS-CCD 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
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