Antlia Solar Discover CaK and H-alpha Filters

Antlia Solar Discover is a system of filter assemblies for imaging the Sun in calcium and hydrogen light. It includes 5Å and 3nm CaK assemblies centered on the 393.3nm calcium K line, dualband Ha, CaK and CaH assemblies in Standard and Mini sizes, and the Dualband ERF energy rejection filter.

Accessories adapt the system to your telescope: 2x, 3x and 5x Barlow lenses for the 5Å CaK filter, 50mm and 70mm extension tubes and an adjustable aperture diaphragm. Always assemble it as Antlia specifies for safe solar use.