ZWO SII 7nm 1.25-inch Filter
This filter is for use with narrowband astrophotography .
Sulphur II light has a wavelength of 672.4nm, and is the most commonly-used narrowband frequency. It can be used as part of three-band or other false-colour images.
About ZWO Optical
Established in 2011, ZWO Optical is a fast-growing global astroimaging camera powerhouse based in Suzhou, China. Known for its iconic ZWO ASI 120MM Monochrome CMOS Camera, the first-ever planetary CMOS camera to beat a CCD in the early 2010s, ZWO has pioneered new astroimaging technology with revolutionary new features, including USB 3,0, cooled systems, ADC and more. Today, ZWO Cameras is known by every passionate astrophotographer and is available in over 25 countries world-wide.
Product Code: ZWO-SII7nm1.25