ANTLIA SII 2.5nm ULTRA NARROWBAND FILTER 2" pier 25″ mounted or 31mm unmounted

25″ mounted or 31mm unmounted filters

Low profile design with an optical thickness of only 77mm

Thread the provided grub screw through the centre hole on the EQ8 / CQ350's base so that it is flush with the top side of the plate

Centaurus A by Dave Sokolich | Esprit 120ED Pro

ANTLIA SII 2.5nm ULTRA NARROWBAND FILTER 2" pier 25″ mounted or 31mm unmountedThe Antlia Sulphur II 2. 5nm Ultra narrowband 2" filter has a FWHM (full width half maximum) of an incredible 2. 5nm +0. 3 0. 1nm and a high transmission efficiency of > 95% at the central wavelength. These filters are made from quartz glass which has an ultra low thermal expansion coefficient and outstanding thermal and mechanical properties. Utilizing Antlia's precisely controlled advanced coating process, these filters are exceptionally durable and