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ASTRODON FILTRO FOTOMETRICO TIPO V diam. 31,8 mm montato in cella Visualizza ingrandito

Astrodon Filter Type V Photometric Diam. 31.8 mm Mounted In Cell




Filter Photometric Astrodon Type V Diam. 31.8 mm Mounted In The Cell.

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261,00 €

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Filters UVBRcIc use the classic standard photometric defined by Johnson in 1950 and subsequently improved by Cousins ​​in 1990. Until now the photometric filters with this standard were colored filters Schott, but to better suit modern ccd and to maintain strict standard J / C, the Astrodon used treatments for narrow bandwidth filters and R (calling Ic and Rc with the c indicating that the standard is respected Cousins).

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