Astrodon has developed the next generation of photometric (UVBRI & Sloan) and Exoplanet telescope filters for research. Their Photometric filters are made with a single high-quality fused silica substrate, and are 100% coated using hard oxide sputtered coatings which eliminates fog. Astrodon achieved the highest throughputs available anywhere, along with great durability so important for long-term, consistent research.
Exoplanet filters are ideal for use in amateur-scale telescopes to measure light curves of stars to discover exoplanets. You can now find nearby solar systems with a telescope as small as 10-inches!