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_t = setTimeout(() => open = false, 200)" > Careers open = true, 100)" @mouseleave="clearTimeout(_t); _t = setTimeout(() => open = false, 200)" > Events open = true, 100)" @mouseleave="clearTimeout(_t); _t = setTimeout(() => open = false, 200)" > Media open = true, 30)" @mouseleave="clearTimeout(_t); _t = setTimeout(() => open = false, 75)" > Image Gallery open = true, 30)" @mouseleave="clearTimeout(_t); _t = setTimeout(() => open = false, 75)" > Video Highlights open = true, 30)" @mouseleave="clearTimeout(_t); _t = setTimeout(() => open = false, 75)" > Chroma Sponsored Image Contests open = true, 100)" @mouseleave="clearTimeout(_t); _t = setTimeout(() => open = false, 200)" > News open = true, 100)" @mouseleave="clearTimeout(_t); _t = setTimeout(() => open = false, 200)" > Testimonials open = true, 30)" @mouseleave="clearTimeout(_t); _t = setTimeout(() => open = false, 75)"> Contact Close Explore Chroma’s catalog of astronomy filters designed for deep-sky imaging, planetary observation, and scientific measurement. From narrowband emission filters to broadband color imaging and photometric systems, our filters deliver precise spectral control, high transmission, and long-term stability for demanding astronomical applications. Start by browsing filter categories below, or explore our tools and featured resources to support your workflow. Isolate specific emission lines such as H-alpha, O III, and S II for high-contrast imaging of nebulae and emission regions. Astronomy filters must maintain spectral accuracy across temperature changes, humidity, and years of use. Chroma’s hard-sputtered coatings are engineered for durability and stability, helping ensure consistent performance for long-term imaging projects and scientific studies. As an ISO-certified manufacturer, we adhere to strict quality assurance procedures and stand behind this commitment with an industry-leading warranty —our assurance of long-term stability and performance. Quick References & Education Learn how to get the best results from your filters: Technical Library — Application notes, white papers, and guides. Cleaning & Handling Filters — Best practices to protect coatings and preserve performance. Featured Resources Chroma filters support a wide range of scientific and industrial applications. Explore other areas where our technology enables precision and reliability. Chroma’s application scientists and engineers support astronomers and astrophotographers at every stage—from selecting catalog filters to developing custom solutions for observatories and instruments. Tel 800-824-7662 Fax 802-428-2525 Close Loading.. Please check the spelling or try searching with different keywords. You can also explore the following sections for more information: Tel: +1-802-428-2500 Toll-free: 800-824-7662 We're here to help you find the optical filter solutions you need. 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