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Optec offers a wide selection of filters for astronomical photometry in standard color systems. These filters are designed for the SSP series of single-channel stellar photometers and are 12.5mm in diameter and 7.00 mm thick.
The filter sets offered are the Johnson U B V R I J H wide-band standard color set, Strömgren u v b y medium-band four-color set and the H wide and narrow band filter set. Each of these filters can be factory mounted directly into the 2 and 6-position filter sliders for the SSP photometers.
For routine photometry, consider a B - V set mounted in a two position slider.
