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The efficiency of the TAURUS-2 focal reducer (i.e.
camera and collimator) is shown as a function of wavelength
in Figure . The peak efficiency
is 65 per cent. The throughput of the Fabry-Perot etalons used
in TAURUS is difficult to quantify, but should be in the range
70 to 90 per cent. The triple period interference filters used
as blocking filters have a typical peak transmission of about
60 per cent. The peak efficiency of the complete system is
therefore likely to be about 30 per cent.
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Figure: The efficiency of the TAURUS-2 focal reducer (i.e. camera
Tue Aug 15 16:42:46 BST 1995