diff --git a/src/Ground_Stations.tex b/src/Ground_Stations.tex
index 590232d..971ec16 100644
--- a/src/Ground_Stations.tex
+++ b/src/Ground_Stations.tex
@@ -14,15 +14,34 @@
 
 Ground Stations.
 
-\section{SatNOGS Radio Frequency Ground Stations}
+\subsection{SatNOGS Ground Stations}
 The Libre Space Foundation built the SatNOGS network using distributed,
-volunteer-run, radio frequency ground stations, such as in Fig.
+volunteer-run, radio frequency ground stations, such as in Figure 
 \ref{fig:spacecruft-rotator}, page \pageref{fig:spacecruft-rotator}.
 \footnote{\scriptsize{\url{https://spacecruft.org/assets/i/spacecruft-rotator.png}}}
 
 \begin{figure}[h!]
-\includegraphics[keepaspectratio=true,height=1.10\textheight,width=1.00\textwidth,angle=0]{spacecruft-rotator.png}
+\begin{center}
+\includegraphics[keepaspectratio=true,height=0.40\textheight,width=1.00\textwidth,angle=0]{spacecruft-rotator.png}
  \caption{SatNOGS ground station with VHF and UHF antennas on a rotator.}
  \label{fig:spacecruft-rotator}
+\end{center}
+\end{figure}
+
+\subsection{SatNOGS Optical Ground Stations}
+The Libre Space Foundation is developing a system to add optical ground
+stations to the distributed network.
+
+Prototype optical ground stations are being developed. An example
+setup, using a Skywatcher telescope tripod and tracking mount, can be
+seen in Figure 
+\ref{fig:video-enclosure-mount-tripod}, page \pageref{fig:video-enclosure-mount-tripod}.
+
+\begin{figure}[h!]
+\begin{center}
+\includegraphics[keepaspectratio=true,height=0.40\textheight,width=1.00\textwidth,angle=0]{video-enclosure-mount-tripod-web.png}
+ \caption{SatNOGS Optical ground station prototype with telescope tracking mount.}
+ \label{fig:video-enclosure-mount-tripod}
+\end{center}
 \end{figure}
 
diff --git a/src/Hardware.tex b/src/Hardware.tex
index 6b03e52..da99b92 100644
--- a/src/Hardware.tex
+++ b/src/Hardware.tex
@@ -10,7 +10,7 @@
 %
 
 \section{Overview of Hardware}
-\label{sec:overview-hardware}
+\label{sec:hardware-overview}
 Hardware considerations for a SatNOGS Optical Ground Station.
 
 Main hardware components in an optical ground station:
@@ -36,6 +36,7 @@ Other components:
 
 
 \section{Camera}
+\label{sec:hardware-camera}
 
 Cameras being tested:
 
@@ -54,6 +55,7 @@ Cameras being tested:
 }
 
 \section{Lenses}
+\label{sec:hardware-lenses}
 
 Lenses being tested:
 
@@ -64,6 +66,7 @@ Lenses being tested:
 
 
 \section{Embedded Computer}
+\label{sec:hardware-computer}
 Computers, such as Raspberry Pi, that can be used.
 
 \begin{itemize}
@@ -88,3 +91,11 @@ Comparing embedded computers for SatNOGS Optical.
  \hline
 \end{tabular}
 \end{center}
+
+\section{Example Tracking Ground Station}
+\label{sec:hardware-tracking-ground-station}
+This is an example of a tracking ground station.
+It is a prototype, so there are lots of mis-matched,
+overbuilt/underbuilt parts.
+
+
diff --git a/src/SNOUG.tex b/src/SNOUG.tex
index 1ed1a2c..7794f14 100644
--- a/src/SNOUG.tex
+++ b/src/SNOUG.tex
@@ -60,7 +60,7 @@ leftmargin=1cm,rightmargin=1cm
 \usepackage{epstopdf} % /usr/share/doc/texlive-doc/latex/oberdiek/epstopdf.pdf
 % http://www.tug.org/applications/hyperref/manual.html
 % /usr/share/doc/texlive-doc/latex/hyperref/hyperref.pdf
-\usepackage[colorlinks=true,linkcolor=jebba-dark-blue,urlcolor=jebba-dark-blue]{hyperref}
+\usepackage[colorlinks=true,linkcolor=jebba-darker-blue,urlcolor=jebba-dark-blue]{hyperref}
 %\usepackage{url} % /usr/share/doc/texlive-doc/latex/url/url.pdf % Use hyperref.
 \graphicspath{{./figures/}}
 
@@ -177,7 +177,7 @@ leftmargin=1cm,rightmargin=1cm
 \definecolor{jebba-white}{cmyk}{0.00 0.00 0.00 0.00}
 \definecolor{jebba-black}{cmyk}{1.00 1.00 1.00 1.00}
 \definecolor{jebba-green}{cmyk}{0.22 0.00 0.78 0.24}
-\definecolor{jebba-darker-blue}{cmyk}{0.87 0.45 0.00 0.76}
+\definecolor{jebba-darker-blue}{cmyk}{0.84 0.76 0.00 0.70}
 %%% END COLORS %%%
 
 %%% DEBUG %%%