Chroma Clear Filter

Astronomy Plus – Telescopes & Astrophotography Canada Verified independent store

→

Chroma Clear Filter The Chroma Clear Filter has an average transmission greater or equal to 97% across the 380-1000nm range. Chroma Technology is an employee-owned company. They sp ecialize in the design and manufacture of sputtered optical filters and coatings for applications that require the greatest precision in color separation, optical quality and signal purity. Their astronomical filters are used worldwide in research and amateur applications. They are as comfortable designing and manufacturing custom filters as they are for their catalog items. Highly precise and accurate, the passbands of these filters remain spectrally stable and do not drift in response to extreme temperature fluctuations or changes in humidity. All filters may be used with apertures of f/4 or smaller. Chroma provides custom coating services for more demanding imaging applications requiring larger apertures such as f/3 or f/2. They also can provide larger sizes and unique passbands upon request. Chroma manufactures the highest quality astronomy filters with durable, sputtered hard coatings using single substrates of the best glass, eliminating the need for laminations. All primary filter coatings are applied on the front surface and anti-reflection coatings on the rear surface to prevent ghosting and to maximize transmission. All filters are manufactured in Vermont. Technical Specifications T: ≥ 97% avg., 94% min. 380-1000nmDurable sputter coatingsParallelism: Show more