diff --git a/src/Upload.tex b/src/Upload.tex
index c60d42d..5639370 100644
--- a/src/Upload.tex
+++ b/src/Upload.tex
@@ -123,3 +123,39 @@ Sample data from \texttt{.cat} file, just the top select lines of a 1,033 line f
    786.5237      1.8174   6.0213     98.05751     27.88283     16.09418
 ...
 \end{minted}
+
+
+\subsection{\texttt{.fits.png} FITS PNG Files}
+\index{FITS}\index{PNG}\index{stvid}
+The \texttt{stvid} application can generate multiple \gls{PNG} files,
+depending how many satellites it finds. In every case it creates at
+least one \gls{PNG} file, with a name like:
+
+\texttt{2022-08-23T04:16:26.633.fits.png}
+
+In this image, as can be see in figure \ref{fig:stvid-png}, page \pageref{fig:stvid-png},
+no detected satellites are indicated.
+The blue lines are from the ``Catalog'', which in this case means \glspl{TLE}.
+The blue lines are drawn whether no, a few, or many satellites are detected.
+They are generated by taking data from the \gls{plate-solver} about where the picture
+\gls{FOV} is, and overlaying satellite \glspl{orbit} that are calculated from
+\glspl{TLE}.
+
+The main blue line is slightly offset from where the satellite is calculated to
+appear.
+The blue line forms a small \texttt{L} shape.
+The smaller segment indicates the area where the satellite may pass.
+Next to the small segment line is the \gls{NORAD ID} for the satellite.
+If it is unknown, it will be given the number 90000 or larger.
+
+\begin{figure}[p!]
+        \begin{center}
+                \includegraphics[keepaspectratio=true,height=1.00\textheight,width=1.00\textwidth,angle=0]{stvid/data/2022-08-23T04:16:26.633.fits.png}
+%                \includegraphics[keepaspectratio=true,height=1.00\textheight,width=1.00\textwidth,angle=0]{stvid/data/2022-08-23T04:16:26.633.fits.png}
+                \caption{\texttt{stvid} PNG.}
+                \label{fig:stvid-png}
+                \index{stvid}\index{PNG}\index{FITS}
+        \end{center}
+\end{figure}
+
+
diff --git a/src/figures/stvid/data/2022-08-23T04:16:26.633.fits.png b/src/figures/stvid/data/2022-08-23T04:16:26.633.fits.png
new file mode 100644
index 0000000..e1d76ba
Binary files /dev/null and b/src/figures/stvid/data/2022-08-23T04:16:26.633.fits.png differ