Hi I am trying to make a table that is landscape and takes up multiple pages. I am using a longtable in landscape mode to do this. Everything compiles fine but for some reason there is a large white space between my 3rd and 4th column. I would like to remove the white space and shift all the other columns over. This will create some white space at the end of the table. here is the code:
\begin{singlespace}
\begin{landscape}
\begin{center}
\begin{longtable}{cp{0.75in}p{0.75in}cccccccccc}
\caption[Photometry Source List]{Photometry for all Sources found in PID 36} \\
%This is the header for the first page of the table...
\hline
\multicolumn{1}{c}{\textbf{\#}} &
\multicolumn{1}{p{0.75in}}{\textbf{RA}} &
\multicolumn{1}{p{0.75in}}{\textbf{DEC}} &
\multicolumn{1}{c}{\textbf{$m_{3.6}$}} &
\multicolumn{1}{c}{\textbf{$\sigma_{3.6}$}} &
\multicolumn{1}{c}{\textbf{$m_{4.5}$}} &
\multicolumn{1}{c}{\textbf{$\sigma_{4.5}$}} &
\multicolumn{1}{c}{\textbf{$m_{5.8}$}} &
\multicolumn{1}{c}{\textbf{$\sigma_{5.8}$}} &
\multicolumn{1}{c}{\textbf{$m_{8.0}$}} &
\multicolumn{1}{c}{\textbf{$\sigma_{8.0}$}} &
\multicolumn{1}{c}{\textbf{$\alpha_{IRAC}$}} &
\multicolumn{1}{c}{\textbf{Class}} \\ \hline
\endfirsthead
%This is the header for the remaining page(s) of the table...
\multicolumn{3}{c}
{{\bfseries \tablename\ \thetable{} -- continued from previous page}} \\
\hline
\multicolumn{1}{c}{\textbf{\#}} &
\multicolumn{1}{p{0.75in}}{\textbf{RA}} &
\multicolumn{1}{p{0.75in}}{\textbf{DEC}} &
\multicolumn{1}{c}{\textbf{$m_{3.6}$}} &
\multicolumn{1}{c}{\textbf{$\sigma_{3.6}$}} &
\multicolumn{1}{c}{\textbf{$m_{4.5}$}} &
\multicolumn{1}{c}{\textbf{$\sigma_{4.5}$}} &
\multicolumn{1}{c}{\textbf{$m_{5.8}$}} &
\multicolumn{1}{c}{\textbf{$\sigma_{5.8}$}} &
\multicolumn{1}{c}{\textbf{$m_{8.0}$}} &
\multicolumn{1}{c}{\textbf{$\sigma_{8.0}$}} &
\multicolumn{1}{c}{\textbf{$\alpha_{IRAC}$}} &
\multicolumn{1}{c}{\textbf{Class}} \\ \hline
\endhead
\hline \hline
\endlastfoot
1&3:44:07.70&32:05:05.58& 11.77& 0.04& 11.95& 0.01& 13.01& 0.10& 11.22& 0.05& -2.50&III\\
2&3:44:06.16&32:07:07.08& 11.45& 0.03& 11.47& 0.01& 11.41& 0.03& 11.32& 0.05& -2.68&III\\
3&3:44:05.31&32:08:02.97& 12.46& 0.04& 12.62& 0.02& 12.65& 0.03& 12.18& 0.20& -2.52&III\\
4&3:44:04.24&32:09:38.55& 12.48& 0.04& 12.62& 0.02& 12.68& 0.03& 12.98& 0.06& -3.39&III\\
5&3:44:08.04&32:06:56.49& 11.61& 0.03& 11.59& 0.01& 11.61& 0.03& 11.03& 0.08& -2.21&III\\
6&3:44:05.67&32:10:44.97& 14.19& 0.09& 14.33& 0.04& 14.15& 0.06& 13.27& 0.13& -1.76&II\\
7&3:44:10.21&32:07:34.59& 12.42& 0.04& 12.32& 0.01& 12.10& 0.03& 11.83& 0.08& -2.14&III\\
8&3:44:11.19&32:08:16.42& 11.44& 0.03& 11.21& 0.01& 11.15& 0.01& 11.25& 0.05& -2.64&III\\
9&3:44:09.98&32:09:41.83& 12.68& 0.04& 12.85& 0.02& 12.84& 0.04& 12.35& 0.07& -2.45&III\\
10&3:44:16.53&32:05:32.97& 11.11& 0.02& 11.10& 0.01& 10.94& 0.02& 11.05& 0.03& -2.72&III\\
11&3:44:13.26&32:09:07.62& 14.61& 0.11& 14.37& 0.04& 14.49& 0.08& 13.40& 0.20& -1.56&II\\
12&3:44:17.76&32:04:47.62& 11.41& 0.03& 11.28& 0.01& 11.21& 0.02& 11.26& 0.04& -2.67&III\\
13&3:44:12.75&32:10:55.31& 12.91& 0.05& 12.99& 0.02& 12.96& 0.05& 12.79& 0.16& -2.69&III\\
14&3:44:15.56&32:09:22.01& 12.60& 0.04& 12.69& 0.02& 12.65& 0.04& 12.88& 0.13& -3.12&III\\
15&3:44:18.24&32:07:32.66& 11.91& 0.03& 11.95& 0.01& 11.82& 0.02& 11.37& 0.03& -2.21&III\\
16&3:44:21.24&32:05:02.48& 11.11& 0.02& 10.97& 0.01& 11.04& 0.03& 11.43& 0.13& -3.23&III\\
17&3:44:20.00&32:06:45.54& 11.69& 0.03& 11.81& 0.01& 11.91& 0.03& 12.57& 0.11& -3.83&III\\
18&3:44:21.68&32:06:24.91& 11.18& 0.02& 11.01& 0.01& 11.00& 0.03& 10.78& 0.08& -2.40&III\\
19&3:44:18.84&32:11:33.68& 14.12& 0.09& 14.21& 0.04& 13.86& 0.12& 12.13& 0.11& -0.54&II\\
20&3:44:23.65&32:07:11.74& 12.74& 0.05& 12.89& 0.02& 12.85& 0.04& 12.59& 0.16& -2.64&III\\
21&3:44:23.57&32:09:34.06& 11.80& 0.03& 11.56& 0.01& 11.39& 0.02& 10.98& 0.03& -1.92&III\\
22&3:44:21.18&32:12:36.58& 11.67& 0.03& 11.46& 0.01& 11.32& 0.02& 10.94& 0.04& -2.01&III\\
23&3:44:21.72&32:12:31.32& 11.71& 0.03& 11.44& 0.01& 11.56& 0.02& 11.87& 0.08& -3.08&III\\
24&3:44:27.31&32:07:17.64& 12.69& 0.04& 12.71& 0.02& 12.62& 0.07& 11.86& 0.16& -1.89&III\\
25&3:44:22.95&32:11:57.76& 11.33& 0.03& 11.04& 0.01& 11.12& 0.02& 11.28& 0.06& -2.83&III\\
26&3:44:25.71&32:09:06.07& 12.45& 0.04& 12.68& 0.02& 12.46& 0.06& 12.07& 0.16& -2.34&III\\
27&3:44:23.74&32:11:56.11& 12.79& 0.05& 12.85& 0.02& 13.11& 0.04& 12.16& 0.04& -2.21&III\\
28&3:44:29.67&32:05:52.36& 11.83& 0.03& 11.94& 0.01& 11.78& 0.04& 11.49& 0.08& -2.41&III\\
29&3:44:29.11&32:07:51.07& 11.69& 0.03& 11.60& 0.01& 11.68& 0.03& 12.02& 0.18& -3.23&III\\
30&3:44:30.48&32:06:29.34& 11.32& 0.03& 11.22& 0.01& 11.22& 0.04& 11.01& 0.12& -2.50&III\\
\end{longtable}
\end{center}
\end{landscape}
\end{singlespace}
Best Answer
In the header for subsequent pages you are using a long text that spans only the first 3 columns:
This text is the culprit of the unwanted behavior.
Let it span the whole table and use
las a specifier:MWE (I've also removed all the unneeded
\multicolumn):Output: