\documentstyle[twoside]{article}

\input ibvs2.sty
\input ibvse.sty

\begin{document}
\IBVShead{5796}{18 September 2007}

\IBVStitle{Minima Times for Selected Close Binary Stars}

\IBVSauth{Kruspe, R.; Schuh, S.; Traulsen, I.}

\IBVSinsto{Institute of Astrophysics, University of G\"ottingen,
  Friedrich-Hund-Platz 1, 37077 G\"ottingen, Germany; \break \indent
  e-mail: schuh@astro.physik.uni-goettingen.de} 

\SIMBADobj{PX And}
\SIMBADobj{EX Dra}
\SIMBADobjJ2000{HS 0705+6700}{07 10 42.09 +66 55 43.97}
\SIMBADobj{AI Tri}
\GCVSobj{PX And}
\GCVSobj{EX Dra}
\GCVSobj{AI Tri}
\IBVStyp{Binaries: eclipsing}
\IBVSkey{CCD photometry}
\IBVSabs{We present several CCD minima observations of the eclipsing}
\IBVSabs{binaries PX And, EX Dra, HS 0705+6700 and AI Tri.}


\begintext

\IBVSEobs{50cm LOMO Cassegrain N 274 500 f/10 telescope, University of
  G\"ottingen, Physics building 
  (51\deg\,33\arcm\,38\farcs 5 N, 
  09\deg\,56\arcm\,41\farcs3 E,
  elevation 201\,m)}

\IBVSEdet{SBIG STL-6303E, KAF-6303E chip, Peltier cooling,\\ & 
  18\farcm9 $\times$ 12\farcm6 FOV, 3072 $\times$ 2048 pixels.}

\IBVSEred{Reduction of the CCD frames was made with the custom-made
IDL\footnotemark\ aperture photometry package TRIPP (Schuh et al.\ 2003).}

\footnotetext{Interactive Data Language by {\tt http://www.ittvis.com}}

\IBVSEmethod{The minima times were determined with a linear
  combination of a Gaussian and a quadratic function.} 

\IBVSEmins{
PX~And      & 53752.3519 & 0.0018 & I  & V & RDD; TMA \\
            & 53759.3799 & 0.0011 & I  & V & DJ; WS \\
            & 54085.3082 & 0.0014 & I  & R & AR; GS; HT; WA \\
            & 54085.4551 & 0.0014 & I  & R & AR; GS; HT; WA \\
EX~Dra      & 53863.5422 & 0.0023 & I  & R & BB; BP \\
            & 53896.5007 & 0.0014 & I  & R & HI; KR \\
            & 53899.4405 & 0.0013 & I  & R & BrS; DT; TI \\
HS\,0705+67 & 54126.4097 & 0.0011 & I  & R & BC; BeS; KN; KT; TI \\
            & 54126.4580 & 0.0011 & II & R & BC; BeS; KN; KT; TI \\
            & 54126.5049 & 0.0011 & I  & R & BC; BeS; KN; KT; TI \\
            & 54126.5533 & 0.0011 & II & R & BC; BeS; KN; KT; TI \\
            & 54126.6007 & 0.0024 & I  & R & BC; BeS; KN; KT; TI \\
AI~Tri      & 54049.4686 & 0.0011 & unknown & clear & TI; WS \\
}

\IBVSEremexp{Observers: 
\newline      AR = Anderson, R.; BB = Beeck, B.; 
              BC = Bergmann, C.; BP = Bittihn, P.; 
\linebreak[4] BeS = Becker, S.; BrS = Brandert, S.; 
              DD = Dauber, D.; DJ = Dobschinski J.; 
\linebreak[4] DT = Dabrowski T.; GS = Gr\"unheit, S.; 
              HI = Heinze, I.; HT = Hattermann, T.; 
\linebreak[4] KN = Kurz, N.; KR = Kruspe, R.; 
              KT = Kresse, T.; NN = Nolte, N.; 
\linebreak[4] RDD = R\"ohrs, D.D.; TI = Traulsen, I.; 
              TMA = Tyra, M.A.; WA = Wiesbaum, A.; 
\linebreak[4] WS = Wende, S.
\newline      All observations (except for the AI~Tri
	      observation) were taken during the
	      ``Physikalisches Praktikum f\"ur Fortgeschrittene'' 
	      under the supervision of S.\ Schuh.}

\IBVSErem{Exposure times were either 3 or 4 minutes. The time stamp
  uncertainty in the images was determined to be never any larger than
  15\,s. Typical photometric accuracies obtained were around 0.03~mag.}

\IBVSEack{We would like to thank K.\ Reinsch for providing technical
  support at the observatory whenever necessary, 
  and S.\ Dreizler for having made possible this work.}

\reference

Schuh, S., Dreizler, S, Deetjen, J.L., G\"ohler, E., 2003, {\it Baltic
  Astronomy}, {\bf 12}, 167
%%\BIBCODE{2003BaltA..12..167S}


\end{document}


