Optolong High Contrast 5cm UHC Pollution Filter EQ wedge 4kg 10kg 10kg 10kg 8kg

4kg 10kg 10kg 10kg 8kg 8kg Weight

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please keep it clean and hygienic to avoid stained filters

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Optolong High Contrast 5cm UHC Pollution Filter EQ wedge 4kg 10kg 10kg 10kg 8kgUHC(ultra high contrast), UHC is also a high speed filter with an obvious effect on blocking harmful lights in the city. CLS filter selectively blocks lights, especially mercury and sodium light from synthetic lamps and the glow of nature. The CLS filter allows high transmission nebula light, it has high transmission in the region of OIII (496 nm and 500 nm), HFS (486 nm), NII (654 nm and 658 nm), HA (656 nm) and SII (672 nm). Our UHC effectively