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Table A.1

Basic characteristics of different UBV filters.

Filter λ c λ o λ p WHM W o

U photoel 3499 3502 3550 699 681
U3 Buser 3666 3652 3754 525 543
B3 Buser 4368 4417 4150 958 974
V Buser 5426 5505 5285 827 870

Notes. Columns show the name of the filter, the central wavelength λc, the effective wavelength λo, the peak wavelength λp the width-at-half-maximum (WHM), and the effective width Wo. Data taken from Asiago database:

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