Antlia Solar Filters

Antlia solar filters image the Sun in calcium and hydrogen light. The 1.25" CaK 3nm 393.3nm filter, used with a Herschel wedge, and the Imaging Herschel Wedge with CaK 3nm filter offer a simple way into calcium K imaging of plages, the chromospheric network and sunspots.

The Solar Discover assemblies go further, with 5Å and 3nm CaK versions, dualband Ha, CaK and CaH assemblies in Standard and Mini sizes, and the Dualband ERF energy rejection filter.