UBVRI 1,25 filter set (Baader Planetarium 2459440) all astro filters opinie

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A set of 5 filters for star photometry with a diameter of ? = 1.25 ". This is a complete set of Johnson photometric filters containing filters U, B, V, R and I. Thanks to the filters (best installed in the filter wheel) you can test the brightness of objects in a standardized way in the sky (in particular the brightness of variable stars), from the difference in brightness for individual filters we obtain precise information about the radiation of the star in individual spectral ranges, its color and temperature

Catalog number: 2459440

Technical specifications

U filter - operating in close ultraviolet (wavelength ? = 367 nm, half width ?? = 66 nm)
Filter B - blue (wavelength ? = 436 nm, half width ?? = 94 nm)
Filter V - with green band center (wavelength ? = 545 nm, half width ?? = 66 nm)
R filter - red (wavelength ? = 638 nm, half width ?? = 160 nm)
Filter I - operating in near infrared (wavelength ? = 797 nm, half width ?? = 149 nm)