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The transmission values given here were read off by eye (not ours) from
spectrophotometer tracings. We do not guarantee their accuracy.
The notation "na" means that no readable values are available at
the given wavelength.
Red leaks are given in a separate table.
The BVRI filters were made according to the prescription given by Bessel
(PASP 1990, 102, 1181), and are intended to transform well to the
Johnson-Cousins system when used with CCDs. The Rs is the Spinrad night-sky
suppression filter, discussed in detail by Djorgovskii (PASP, 1985, 97, 1119.
Calibration of the Lick Red CCD Bandpasses).
The U filter transmission table was generated from the
digitized transmission plot.
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