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1.25''/2''/EOS-C CLS Light Pollution Broadband Filters

SKU: F9155
Regular price US$ 29.99

The bandwidth of Svbony CLS filters is wider than that of Svbony UHC filters, and the luminous flux is large, which is more suitable for use in places with less light pollution.

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Model  F9155A F9155B F9155D
Size 1.25‘’ 2‘’ EOS-C
Thread Standard M28.5*0.6 Standard M48*0.75 Canon EOS-C
Type City Light Suppression Filter (CLS Filter)

1. The SVBONY 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)

2. Together with the highly transparent in main nebula emission lines at OIII(496nm and 500nm), H-beta (486nm), NII(654nm and 658nm), H-alpha(656nm) as well as SII(672nm), the Svbony CLS filter is suitable for enhancing the contrast and details for both visual and photographic purpose at sub-rural area

3. Light pollution filter do not eliminate the effects of light pollution or increase the object's brightness. In many cases, they increase the contrast between nebula and night sky, not brightening the nebula

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