Solvers, ground stations, mas

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Jeff Moe 2022-08-30 00:15:27 -06:00
parent 3ed71bd88e
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10 changed files with 116 additions and 9 deletions

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@ -4,7 +4,10 @@ for download in the Releases section of the source code archive:
* https://spacecruft.org/spacecruft/SNOUG/releases
To build the PDF from the LaTeX source code, see the `BUILD.md` document.
# Build from Source
To build the PDF documentation from the LaTeX source code,
see the `BUILD.md` document.
# License

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@ -5,4 +5,6 @@
* Lists/tables in boxes (?).
* Better tables.
* See also for acronyms, index, glossary.
* Using ps2pdf to resize PDF for web breaks internal links.
* Content.
* Tracking.

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@ -211,3 +211,12 @@
% CCD
% photon
% giza (pgplot?)
% orbit
% decay
% libre
% astrometry.net
% astap
% Source Extractor
% Watney
% WCS
% PiCamera

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@ -31,12 +31,25 @@ It shows a \gls{SatNOGS} \gls{ground-station} with \gls{VHF} (right) and \gls{UH
\begin{figure}[h!]
\begin{center}
\includegraphics[keepaspectratio=true,height=0.40\textheight,width=1.00\textwidth,angle=0]{spacecruft-rotator.png}
\caption{SatNOGS Ground Station with antennas.}
\caption{SatNOGS ground station with antennas.}
\label{fig:spacecruft-rotator}
\index{radio}\index{RF}\index{rotator}\index{antenna}\index{ground-station}
\end{center}
\end{figure}
Ground stations can be viewed on the SatNOGS network website, such as
XXX ref.
%https://network.satnogs.org/stations/2733/
\begin{figure}[h!]
\begin{center}
\includegraphics[keepaspectratio=true,height=0.40\textheight,width=1.00\textwidth,angle=0]{satnogs-ground-station-web.png}
\caption{Ground station viewed on SatNOGS website, example.}
\label{fig:satnogs-ground-station-web}
\index{ground-station}
\end{center}
\end{figure}
\section{SatNOGS Optical Ground Stations}
\index{ground station}\index{Libre Space Foundation}

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@ -49,6 +49,7 @@ Cameras being tested:
\item The Imaging Source IMX174 based. \index{The Imaging Source}\index{IMX174}
\item ZWO ASI IMX174 based monochrome. \index{ZWO ASI}
\item \gls{DSLR} camera. \index{DSLR}
\item PiCamera. \index{PiCamera}
\end{itemize}
\fbox{

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@ -22,15 +22,20 @@ The SatNOGS Optical Unofficial Guide documents how to set up and run an
\section{Unofficial Guide Overview}
First, an overview of the this text, then the \gls{LSF},
some of it's key projects, such as the \gls{SatNOGS} network.
First, an overview of the this text, then the \gls{LSF}
and some of it's key projects, such as the \gls{SatNOGS} network.
A cursory review of satellites and existing \gls{RF} ground stations
will be followed by a big picture view of acquiring and processing
images of satellites. Hardware is reviewed, then software to run
on it, with many options, including what is best. Finally,
what to do with the data (idk!).
The chapters that follow are listed below.
% Perhaps more LaTeXy ref XXX
\begin{itemize}
\item Satellites --- What are we looking at?
\item Ground Stations --- How Earth talks to satellites and back.
\item SatNOGS Optical Process Overview --- The big picture of what
\item Toolchain and Process --- The big picture of what
hardware and software is needed to set up an optical ground station
for use on the distributed network.
\item Hardware --- Details on appropriate hardware configurations,

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@ -334,9 +334,9 @@ leftmargin=1cm,rightmargin=1cm
% Comment out a line to not render that chapter
\chapterconf{Satellites}{Satellites}{Artificial Satellites in Space}
\chapterconf{Ground_Stations}{Ground Stations}{Looking up from Earth}
\chapterconf{SatNOGS_Optical}{SatNOGS Optical Process Overview}{Network of Optical Ground Stations for Satellites}
\chapterconf{SatNOGS_Optical}{Toolchain and Process}{Make Old Photons Useful Again}
\chapterconf{Hardware}{Hardware}{Design and Set Up Equipment}
\chapterconf{Software}{Software}{Satellite Software}
\chapterconf{Software}{Software}{Satellite Applications on Earth}
\chapterconf{Acquire}{Acquire}{Twinkle, Twinkle, Little Starlink}
\chapterconf{Solve}{Solve}{Place from Pixels}
\chapterconf{Detect}{Detect}{Find Satellites}

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@ -12,6 +12,80 @@
\section{Plate Solver}
\label{sec:plate-solver}
\index{plate solver}
A ``plate solver'' will take an image of stars and detect the time and place
of the picture. There are two main steps:
Description of plate solvers to follow.
\begin{enumerate}
\item Extract stars from an image, such as a \gls{FITS} file generated by \texttt{stvid}.
\item ``Solve'' the image of the stars in the image against vast databases of star images.
\end{enumerate}
See below for a list of software tools that detect/extract stars from
images (e.g. \gls{FITS}).
\begin{itemize}
\item Source Extractor.
\item XXX Kstars with ekos adds \texttt{Internal SEP}.
\item XXX Kstars with ekos adds \texttt{Builtin method for solver}.
\end{itemize}
\index{Souce Extractor}\index{Kstars}\index{ekos}
See below for a list of plate solvers than can be used.
\begin{itemize}
\item astrometry.net locally.
\item astrometry.net Internet.
\item astap.
\item Watney.
\end{itemize}
\index{astrometry.net}\index{astap}\index{Watney}
\section{Source Extractor}
\index{Source Extractor}
\texttt{Source Extractor}, formerly \texttt{SExtractor} and some other names,
is an application to extract stars from images. The software has been
widely used for many years.
\url{https://www.astromatic.net/software/sextractor}
\section{astrometry.net}
\index{astrometry.net}
Astrometry.net is a website and software that can be run locally to solve
a plate of stars that has been extracted from \texttt{Source Extractor}. XXX
\index{Source Extractor}
% https://nova.astrometry.net/
\begin{figure}[h!]
\includegraphics[keepaspectratio=true,height=1.10\textheight,width=1.00\textwidth,angle=0]{astrometry-web.png}
\caption{nova.astrometry.net website.}
\label{fig:astrometry-web-web}
\index{astrometry.net}
\end{figure}
\fbox{
\parbox{\linewidth}{
\textcolor{red}{NOTICE:} \\
Using astrometry.net online requires an account with non-libre services.
The astrometry.net software can be installed locally to avoid this.
\index{proprietary}
}
}
\section{Star Databases}
\index{star database}
To use a plate solver, you will need star databases. They can get large.
The \texttt{stvid} application includes a basic star database.
XXX The \texttt{4200} series is also recommended.
\section{World Coordinate System}
WCS info. XXX
\section{Plate Solving with \texttt{stvid}}
Use the \texttt{process.py} scripts described at XXX to solve plates
with \texttt{stvid}.

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