Welcome to APM Telescopes - ASTRONOMY IS PASSION
30 years of experience - optics for astronomy, outdoor, hunting, marine and sports
APM Telescopes is one of the leading astronomy retailers in German-speaking countries and delivers worldwide. With us you can not only easily choose from the range of numerous well-known manufacturers, but you also get high-quality and well-thought-out products at attractive prices with our own optics developments. We offer you an extensive service, which of course includes a detailed specialist advice as well as the production of individual custom-made products.
The Altair 395nm NUV filter selectively passes light of the two main Calcium wavelengths emitted by the sun: CA-K line at 393.37nm, and the CA-H line at 396.85nm.