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  • Svbony Astronomy Filters for T...
    The CLS filter is designed to enhance the transmission of main nebula emission... The CLS filter is designed to enhance the transmission of main nebula emission lines at OIII(496nm and 500nm); H-beta (486nm); NII(654nm and 658nm); H-alpha(656nm) as well as SII(672nm); suitable for CCD cameras unmodified DSLR and any 2inch eyepiece... more
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