{"product_id":"chroma-bessel-ubvri-individual-filters","title":"Chroma Bessel UBVRI Individual Filters","description":"\u003ch2\u003eChroma Bessel UBVRI Individual Filters\u003c\/h2\u003e\n\u003cp\u003eThe Chroma Bessel UBVRI Filters are made for photometric imaging in five different bandpass. They are available for purchase individually.\u003c\/p\u003e\n\u003cp\u003eU-Bessel: UV photometric filter in UBVRI series\u003cbr\u003eB-Bessel: Blue photometric filter in UBVRI series\u003cbr\u003eV-Bessel: Green (Visible) photometric filter in UBVRI series\u003cbr\u003eR-Bessel: Red photometric filter in UBVRI series\u003cbr\u003eI-Bessel: NIR photometric filter in UBVRI series\u003c\/p\u003e\n\u003cp\u003eChroma Technology is an employee-owned company. They specialize 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.\u003c\/p\u003e\n\u003cp\u003eHighly 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.\u003c\/p\u003e\n\u003cp\u003eChroma 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.\u003c\/p\u003e\n\u003cp\u003eAll filters are manufactured in Vermont.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAdditional Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUBVRI filter set for photometric imaging\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eExtremely durable coatings withstand humidity changes and extreme temperature fluxes and remain spectrally accurate \u003c\/span\u003e\u003cspan\u003ein CWL and band pass adherence\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eNo reflections leading to image distortions or “back reflections”\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Chroma Bessel UBVRI Filter Set is made for photometric imaging in five different bandpass.\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eDurable, anti-reflective coatings onboth exterior surfaces over applicable transmission range\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eThickness: 4.9 +\/-0.05mm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eParfocal +\/-0.2mm\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eIn the Box\u003c\/h3\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan\u003eChroma Bessel UBVRI Filter Set of the chosen size\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eWarranty \u0026amp; Manuals\u003c\/h3\u003e\n\u003cp\u003eChroma Astronomy Filters \u0026amp; Sets Brochure\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eLifetime Warranty for Sputtered Catalog Filters\u003c\/p\u003e","brand":"Chroma","offers":[{"title":"1.25\" round mounted \/ U-Bessel 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