Optolong City Light Suppression Telescope Filter

Description

Do you have artificial light pollution where you set your telescope? The Schott B260 substrate material is from Germany. This CLS filter has a wider pass-band than the Ultra High Contrast (UHC) filters and is favored by many when observing in mild to moderate light pollution. Low optical density indicates high transmission. Included: -Each filter comes with a plastic case with high pressure EVA case lining. Low optical density indicates high transmission. - Increased Contrast - The effects of light pollution are not eliminated, but suppressed, and the brightness of objects are not increased, but let through. - Multiple layers of. Filter substrate is fine-optically polished to 1/4 wave and <30 parallelism over both surfaces - Surface quality, according to MIL-O-13830, is 60/40This 2-inch CLS filter is made with thick Schott glass which has been multi-coated with ion-assisted deposition technology. The CLS filter reduces the transmission of light pollution wavelengths. Filter substrate is fine-optically polished to 1/4 wave and <30 parallelism over both surfaces - Surface quality, according to MIL-O-13830, is 60/40This 2-inch CLS filter is made with thick Schott glass which has been multi-coated with. It specifically targets the wavelengths of high and low-pressure sodium vapor and mercury vapor lights. Increased Contrast - The effects of light pollution are not eliminated, but suppressed, and the brightness of objects are not increased, but let through.

Key Features

• Filter substrate is fine-optically polished to 1/4 wave and <30 parallelism over both surfaces - Surface quality, according to MIL-O-13830, is 60/40This 2-inch CLS filter is made with thick Schott glass which has been multi-coated with.
• The Schott B260 substrate material is from Germany. - Filters are either 2 mm thick on 1.25-inch, 2-inch, and 36 mm filters, or 1.0 mm thick on Clip series filters. - The filter mounting ring has been CNC machined from lightweight, strong.
• The Optolong CLS, is a City Light Suppression Broadband Telescope Filter.
• Low optical density indicates high transmission. - Increased Contrast - The effects of light pollution are not eliminated, but suppressed, and the brightness of objects are not increased, but let through. - Multiple layers of.
• Resulting in a super thin 2-inch filter cell with a clear aperture of 45 mm.-This CLS filter is suitable for color CCD cameras, unmodified DSLR cameras, and visual viewing. - Included: -Each filter comes with a plastic case with high.
• The CLS (City Light Suppression) filter is designed to enhance the contrast and improve the visibility for both photographic and visual applications in artificial light polluted areas.