Index: trunk/doc/release.2015/ps1.analysis/analysis.tex
===================================================================
--- trunk/doc/release.2015/ps1.analysis/analysis.tex	(revision 40710)
+++ trunk/doc/release.2015/ps1.analysis/analysis.tex	(revision 40711)
@@ -783,21 +783,5 @@
 \code{SKY} and \code{SKY_SIGMA} are calculated for each source in the
 output catalog.  For more details of the background subtraction, see
-the discussion in Section~2.7 of \cite{waters2017}.
-
-\begin{figure*}[htpb]
-  \centering
-  \includegraphics[width=0.9\hsize,angle=0,clip]{pics/{N157.v1}.png}
-  \caption{Pattern Correction and large galaxies}
-  \label{fig:ngc157.with.pattern}
-\end{figure*}
-
-\begin{figure*}[htpb]
-  \centering
-  \includegraphics[width=0.9\hsize,angle=0,clip]{pics/{N157.v2}.png}
-  \caption{Pattern Correction and large galaxies}
-  \label{fig:ngc157.without.pattern}
-\end{figure*}
-
-% \note{give examples with simulations and show examples of over-subtraction}
+the discussion in Section~3.11 of \cite{waters2017}.
 
 \subsection{Initial Source Detection}
@@ -2912,5 +2896,5 @@
 data.  The work by \cite{2017MNRAS.468.3499D} used images and their
 own analysis of the pixels with the program Sextractor
-\citep{Bertin.ref}.
+\citep{sextractor}.
 
 For the Pan-STARRS $3\pi$ PV3 analysis, we have measured the full set
@@ -3197,7 +3181,18 @@
 image.
 
-% \section{Examples and Tests}
-
-% \section{Conclusions}
+\section{Conclusions}
+
+The Pan-STARRS Image Processing Pipeline has used the \code{psphot}
+software to detect and characterize astronomical sources in images
+from both the PS\,1 and PS\,2 telescopes since 2008.  This software
+system has produced highly-reliable stellar photometry and astrometry
+measurements as demonstrated by the high-quality data products
+released as part of the Pan-STARRS Data Releases 1 and 2.  This
+configurable software system has been used for stellar photometry in
+direct detection model, difference image mode, and forced photometry
+mode, as well as galaxy photometry and morphology analysis.  To date
+(2019 May), over 900 billion detections of sources in more than 2
+million PS\,1 exposures have been characterized (some representing
+repeated measurements of the same exposures).  
 
 \acknowledgments