UNIVERSITY OF CALIFORNIA OBSERVATORIES / LICK OBSERVATORY
|TRANSMISSION TABLESFOR OUR U, B, V, R, I,AND Rs FILTERS|
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.
|In the small table below, the first line underneath the filter name is the approximate start of that filter's red leak in microns. The second line is the approximate peak strength of the red leak on the same scale as used in the main table below.|