From:
UKIDSS website, technical section - filters.
The bandpass of the WFCAM Z filter (0.83-0.925µm)
was designed
to provide a reasonable match to the effective wavelength of the SDSS
z' bandpass, but with a rectangular profile, and avoiding the
atmospheric absorption band near 0.95µm. The
specified WFCAM Z profile is shown in red. The array quantum
efficiency is approximately flat over this wavelength range. The SDSS
z' bandpass is defined by the long-pass z' filter and the falling
q.e. of the CCDs towards longer wavelengths, multiplied by the
atmospheric transmission. The normalised z' system throughput is shown
as the grey dash-dot line. The effective wavelengths of the WFCAM Z
and SDSS z' bandpasses are 0.876µm and 0.887µm,
respectively
(effective wavelength as defined by Schneider et al. 1993, ApJ, 264,
337).
UKIDSS
WFCAM Z filter profile
