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Flat Fielding

For the flat fielding, all frames of objects, sky, standard stars, and comparison are divided by the normalized flat frame.

Figure 34: Part of the normalized flat frames of $ H$-band made by (a) APNORMALIZE task (b) APFLATTEN.
\begin{figure}
\lq
\begin{center}
\includegraphics[width=6in]{Flat_compare.eps}
\end{center}
\end{figure}

Figure 35: Part of the normalized flat frames of $ K$-band made by (a) APNORMALIZE (b) APFLATTEN.
\begin{figure}
\lq
\begin{center}
\includegraphics[width=6in]{Flat_compare_K.eps}
\end{center}
\end{figure}



Tae-Soo Pyo
2003-05-29