\documentstyle[twoside,hyperref]{article}

\input ibvs3.sty
\input ibvse.sty

\begin{document}
\IBVSheadDOI{63}{6232}{19 December 2017}

\IBVStitletl{CCD Times of Minima of Eclipsing Binaries}

\IBVSauth{Kubicki, D.}

\IBVSinsto{Torun Centre for Astronomy, Faculty of Physics, Astronomy and Applied Informatics, N. Copernicus University, Grudziadzka 5, 87-100 Toru\'n, Poland; e-mail: kubicki@ca.umk.pl}

\IBVStyp{  Binaries: eclipsing, cataclismic  }
\IBVSkey{CCD photometry}

\IBVSabs{We present 7 times of minima of 3 eclipsing binaries.}


\begintext

\IBVSEobs{\textbf{T1}: 60cm Cassegrain telescope (f/12.5) at the Nicolaus Copernicus University Ob\-ser\-vatory
(53.0943\,$^{\circ}$N,\,18.5532\,$^{\circ}$E).}

\IBVSEdet{STL-1001E CCD camera, Peltier cooling, KAF-1001E chip, $11.4\arcm\times11.4\arcm$ 1024 $\times$ 1024 pixels.}

\IBVSEred{Differential photometry with the software AstroimageJ.}

\IBVSEmethod{Marquardt-Levenberg}



\begin{center}
\begin{tabular}{|lllllll|}
\hline
\multicolumn{3}{|l}{\bf Times of maxima of eclipsing binaries:} & && & \\
\hline
Star name & Time of min. & Error & Type & Filter &  $O-C$ [day] & Eph. ref.\\
 & HJD  & & && &\\
\hline
SZ Her	 &2457100.540359& 0.000259&I&clear&$-$0.0005 &1 \\ 
XY Leo& 2457070.470608 &0.000178& I&$R$& 0.0168 &1\\
&2457099.450280 &0.000193& I&clear&0.0179  &1\\
&2457100.440553 &0.000830 &II&clear&  0.0139&1\\
HW Vir& 2457070.558122& 0.000194& I&clear& $-$0.0005	 &1\\
&2457100.496769&0.000159& II&clear& $-$0.0001 &1\\
&2457099.504577&0.000119& I&clear& $-$0.0005 &1\\
\hline
\end{tabular}
\end{center}


\IBVSEack{These minima times made use of the paper by Kreiner (2004). Special thanks to Krzysztof Go\'zdziewski for his invaluable help.}


\references

$O-C$ gateway, an on-line database of all known eclipsing binaries \\ ({\tt http://var.astro.cz/ocgate}). 

Kreiner, J.M., 2004, {\it Acta Astronomica}, {\bf 54}, 207

\endreferences


\end{document}
