ANTLIA 4.5nm EDGE NARROWBAND FILTERS

The Antlia 4.5nm Edge narrowband filters have the same excellent transmittance characteristics as their 3nm Pro series but at a more affordable price.

The 4.5 nm bandpass is only 1.5% of the entire visible spectrum, increasing the signal to noise ratio and delivering high contrast images and extremely dark backgrounds. Available in 1.25", 2", 31mm, 36mm & 50mm round.