m to 5.5 m, response functions of the order sort filters, and blaze functions of the echelle and cross-disperser gratings.
The atmospheric transmittance for the Mauna Kea summit was calculated from 1.0 m to 5.5 m by `ATRAN' program of Load (1992).
The blaze function depends on the incident angle toward the grating.
Figure 26 
and 
show the blaze functions at the nominal setting angle,
67
5 and
240 for the echelle and cross-disperser, respectively.
![\begin{figure}
\lq
\begin{center}
\includegraphics[scale=0.8]{Response_Fig.eps}
\end{center}
\end{figure}](img236.png) |