The JKT grisms are little used, and potential users should check their
availability with support staff before applying to use them.
The JKT CCD camera and its dedicated A&G unit are described in detail in
Sections 
and . In addition
to using this as an imaging instrument, it is possible to carry
out low resolution slitless spectroscopy with one of two grisms.
The grisms are identical except for their blaze; one is blue and the other
red. The efficiency of both of these grisms as a function of wavelength
is plotted in Figure .
[ TIFF ]
Figure: Efficiency curves for the JKT CCD camera grisms
When used in first order, the dispersion is 11.2 Åpixel on the Tektronix chip (pixel = 24 microns), so that with 1 arcsec seeing the spectral resolution is about 32 Å (FWHM). Note that when observing in the red, it is necessary to use a colour filter to remove second order blue light.