Baader have introduced a full set of Photometric UBVRI filters available in both 1.25" and 50mm Square formats.
Baader UBVRI - Filterset, 1pc each of U, B, V, R, I Filter
Photometric Johnson/Bessel filter system
partial dielectric design with BBAR minimized reflections
Planeoptically polished, 4mm glass thickness
non-ageing sealed coating edges
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