Antlia Hydrogen Alpha (Ha) 2.5nm Ultra Narrowband 36mm Filter (ANT-25-HA-36) V2 The T-Threads on the top

The T-Threads on the top of the Universal T-Adapter screw into a T-Ring (sold separately) that is designed to attach to the brand-specific mounting flange of your camera

Max Payload: 7

25 user defined objects

you can add the optional ALTO telescope cover motor and use GIOTTO as a remotely controlled motorized cap

Credit: Vincent Cheng

Antlia Hydrogen Alpha (Ha) 2.5nm Ultra Narrowband 36mm Filter (ANT-25-HA-36) V2 The T-Threads on the topThe Antlia SHO 2. 5nm Ultra series filters are made with quartz glass and undergo precisely controlled coating processes to ensure optimal performance. The 2. 5nm Ultra series is designed with a FWHM (full width half maximum) of 2. 5nm +0. 3 0. 1nm and a transmission efficiency >92 95% at the Central Wavelength. The quartz glass possesses an ultra low thermal expansion coefficient with outstanding thermal and mechanical properties. When combined with