SV160 SVBONY S-II 1.25" 7 nm Astrophotography Filter Refractor Mount It gives a useful field

It gives a useful field of view

Designed for Heavy Light Pollution (Up to Bortle 8)

DewMaster 2 -Five channels

even during longer exposure times

SV160 SVBONY S-II 1.25" 7 nm Astrophotography Filter Refractor Mount It gives a useful fieldSVBONY S II 1. 25" SV160 7 nm Astrophotography Filter The SVBONY S II 1. 25" SV160 7 nm Filter is a professional astrophotographic filter designed to isolate the ionized sulfur (S II) emission lines at 671. 6 nm and 672. 4 nm. With a narrow Full Width at Half Maximum (FWHM) of 7 nm, it delivers outstanding contrast and precision when imaging emission nebulae under light polluted skies. Main Features High precision bandpass filter optimized for the S