Mini 1.25" Solar Discover Dualband Ha/CaK

The Antlia Solar Discover Dualband (Ha, CaK, and CaH) filter assembly is specifically designed for solar photosphere photography, effectively enhancing contrast and sharpness in solar imaging with greater visibility of surface details and highlights of sunspots, while also providing higher contrast for solar faculae. The complete assembly comes with an Antlia Energy Rejection Filter (ERF) that blocks UV and IR light to allow the desired wavelengths Ha 656.3nm, CaK 393.3nm, and CaH 396.8nm to pass through, with a necessary ND filter already manufactured installed in the tube. The mini version is designed with 1.25" adapter for direct connection to standard 1.25" focusers, making it ideal for refractor telescopes up to 100mm aperture without requiring additional aperture reduction.