All Astronomik filters are available in many sizes - 1.25", 2", EOS-Clip, T-Thread, SCT Thread, 50mm circular unmounted, and 50mm x 50mm. Additionally, many options of sets of filters at a special price are available. Only the most popular sizes are listed here - please contact us with your requirements as we will be holding more stocks than wil be listed here.

ASTRONOMIK filters are used worldwide by leading professionals and amateurs on instruments of all sizes. The largest reported instrument has a mirror diameter of 8.3m! But you do not need a telescope of this size to appreciate the professional quality of Astronomik's products. Our customers appreciate the wide range of finely tuned filters and uncompromising pursuit and dedication to never-ending improvement to meet and surpass the highest quality standards. We are confident that you will be satisfied with Astronomik's optical filter quality.

Astronomik now guarantee each filter for 10 years!