Index: trunk/doc/release.2015/ps1.detrend/detrend.tex
===================================================================
--- trunk/doc/release.2015/ps1.detrend/detrend.tex	(revision 41215)
+++ trunk/doc/release.2015/ps1.detrend/detrend.tex	(revision 41216)
@@ -305,4 +305,36 @@
 for follow up observations within 24 hours of the initial set of
 observations \citep{2015IAUGA..2251124W}.
+
+\begin{table*}
+\caption{\label{tab:detrend.steps} Detrend steps in IPP} % \vspace{-0.5cm}
+\begin{center}
+\footnotesize
+\begin{tabular}{lr}
+\hline
+\hline
+{\bf Measurement} & {\bf Notes} \\
+\hline
+  burntool repair & registration stage \\
+  non-linearity correction & \\
+  Overscan Subtraction     & \\
+  Dark \& Bias Subtraction & \\
+  Pattern Row correction & \\
+  Noisemap                 & \\
+  Flat-field Correction    & \\
+  Fringe Correction        & only \yps \\
+  Pattern Contiuity & \\
+  Static Masks             & \\
+  Dynamic Masks            & camera stage \\
+  crosstalk & \\
+  optical ghosts & \\
+  optical glints & \\
+  diffraction spikes & \\
+  saturated stars & \\
+  
+\hline
+\multicolumn{5}{l}{$^2$ PSF modeling is perform by {\tt ppSub} on the input warps before calling {\tt psphot}} \\
+\end{tabular}
+\end{center}
+\end{table*}
 
 Section \ref{sec:detrending} provides an overview of the detrending
@@ -1614,4 +1646,6 @@
 
 \subsection{Background (``Sky'') Subtraction}
+
+\note{does this section duplicate section 3.7 ??}
 
 During the \IPPstage{chip}-stage processing, after the detrending