\documentstyle[twoside]{article}

\input ibvs2.sty
\input ibvse.sty

\begin{document}
\IBVShead{5206}{21 November 2001}

\IBVStitle{New CCD Times of Minima of Eclipsing Binary Systems}

\IBVSauth{Borkovits, Tam\'as$^1$;  B\'ir\'o, Imre Barna$^1$; Kov\'acs, Tam\'as$^2$}
\IBVSinst{Baja Astronomical Observatory  of B\'acs-Kiskun County,
Baja, Szegedi \'ut, P.O. Box 766, H--6500 Hungary\\ \indent e-mail: borko@electra.bajaobs.hu}
\IBVSinst{Department of Astronomy, E\"otv\"os Lor\'and University,
Budapest, P.O. Box 32, H--1518 Hungary}

\SIMBADobj{RT And}
\SIMBADobj{OO Aql}
\SIMBADobj{IM Aur}
\SIMBADobj{PV Cas}
\SIMBADobj{VW Cep}
\SIMBADobj{DL Cyg}
\SIMBADobj{AK Her}
\SIMBADobj{GU Her}
\SIMBADobj{UV Leo}
\SIMBADobj{DW UMa}
\SIMBADobj{GSC 03822-01056}
\IBVStyp{  Binaries: eclipsing  }
\IBVSkey{CCD photometry}
\IBVSabs{We present several CCD minima observations of 11 eclipsing binaries.}

\begintext

\IBVSEobs{50-cm $f/8.4$ Ritchey--Chr\'etien telescope of the Baja Astronomical Observatory (Hungary)} 

\IBVSEdet{SBIG ST-7 CCD camera \\ 
&Apogee AP-7 CCD camera}

\IBVSEred{Reduction of the CCD frames was made with a customly developed
IRAF\footnotemark \, package.}

\footnotetext{IRAF is distributed by the National Optical Astronomical
Observatories, operated by the Association of the Universities for
Research in Astronomy, inc., under cooperative agreement with the
National Science Foundation}

\IBVSEmethod{The minima times were computed
with parabolic fitting, and in some cases with linearized
Pogson-method.}

{\small
\IBVSEstars{RT And & RS & 23 11 10 & +53 01 33 & HD 218915 & 51463.2480 & 0.62892951 & 1 \\
OO Aql & EW & 19 48 13 & +09 18 32 & HD 187146 & 38613.2222 & 0.50678848 & 2 \\
IM Aur & EA & 05 15 30 & +46 24 21 & 3358-0542$^*$ & 38327.7974 & 1.2472891 & 3 \\
&&&&3358-1208$^{**}$&&&\\ 
PV Cas & EA & 23 10 03 & +59 12 06 & 4010-1432 & 40227.4044 & 1.75046986 & 2 \\
VW Cep & EW & 20 37 21 & +75 35 57 & 4585-2387 & 44157.4131 & 0.2783146 & 2 \\
DL Cyg & EA & 21 39 46 & +48 32 24 & SAO 51164 & 51038.48378 & 4.83039702 & 1 \\
AK Her & EW & 17 13 58 & +16 21 01 & 1536-1834 & 42186.4600 & 0.42152201 & 2 \\
GU Her & EA & 16 32 05 & +30 23 10 & 2581-2418 & 50983.46694 & 4.34320188 & 1 \\
UV Leo & EA & 10 38 21 & +14 16 04 & 0845-0255 & 38440.72633 & 0.60008478 & 2 \\
DW UMa & EA & 10 33 53 & +58 46 54 & 3822-0070 & 46229.00691 & 0.13660653 & 4\\
GSC 3822-1056 & EW: & 10 33 58 & +58 52 16 & 3822-0070 & 50495.5212 & 0.30989069 & 5 \\
}  
}
\IBVSEsource{
1. present paper \\
2. Kholopov et al., 1985 \\
3. Bartolini \& Zoffoli, 1986 \\
4. B\'\i r\'o, 2000\\
5. B\'\i r\'o \& Borkovits, 2000 }


\newpage

{\small
\IBVSEmin{
RT And & 52186.5154 & 1 & I & $R$ & $-0.0015$ & Bor/AP7 \\
OO~Aql & 52107.4975 & 2 & I & $R$ & $0.0184$ & Bor+Kov/ST7 \\
IM~Aur & 51848.396  & 1 & I & - & $-0.015$ & Bor/AP7$^*$ \\
& 51871.471 & 4 & II & - & $-0.015$ & B\'\i r/AP7$^{**}$ \\
& 51891.4282 & 2 & II & - & $-0.0145$ & B\'{\i}r/AP7$^{**}$ \\
& 51909.5119 & 5 &  I & - & $-0.0165$ & Bor/AP7$^{**}$ \\
& 51919.4885 & 6 &  I & - & $-0.0182$ & B\'{\i}r/AP7$^{**}$ \\
& 52189.5265 & 8 & II & $R$ & $-0.0183$ & Bor/AP7$^{**}$ \\
PV~Cas & 51872.3979 & 1 & II & - & $-0.0072$ & B\'\i r/AP7 \\
VW~Cep & 52138.3668 & 3 & II & $R$ & $0.1434$ & Bor/AP7 \\
& 52138.5030 & 2 &  I & $R$ & $0.1404$ & Bor/AP7  \\
DL~Cyg & 51840.3356  & 6 &  I & - & $0.0059$ & Bor/AP7 \\
AK~Her & 52044.3945 & 1 & II & $V$ & $0.0100$ & Bor/AP7 \\
& 52044.3950 & 1 & II & $B,R$ & $0.0105$ & Bor/AP7  \\
& 52066.522 & 1 &  I & $B$ & $0.008$ & Bor/AP7  \\
& 52066.523 & 1 &  I & $V,R$ & $0.009$ & Bor/AP7  \\
& 52073.479 & 1 & II & $R$ & $0.009$ & Bor/AP7  \\
& 52076.4275 & 1 & II & $V$ & $0.0073$ & Bor/AP7  \\
& 52076.4279 & 3 & II & $B,R$ & $0.0077$ & Bor/AP7  \\
& 52087.3897 & 3 & II & $R$ & $0.0099$ & Bor/AP7  \\
GU~Her & 52121.385  & 5 &  I & - & $-0.001$ & Bor/ST7 \\
UV~Leo & 51958.5580 & 2 & II & - & 0.0219 & Bor/AP7 \\
DW~UMa & 51731.38091 & 1 & I & - & $-00042$ & B\'\i r/AP7 \\
& 51842.5785 & 2 &  I & - & $-0.0006$ & B\'\i r/AP7 \\
& 51916.4822 & 2 &  I & - & $-0.0010$ & B\'\i r/AP7 \\
& 51925.36220 & 5 & I & - & $-0.00040$ & Bor/AP7 \\
& 51958.2848 & 1 &  I & - & 0.0000 & Bor/AP7 \\
& 51958.4210 & 2 &  I & - & $-0.0004$ & Bor/AP7 \\
& 51967.4371 & 1 &  I & - & $-.0003$ & Bor/AP7 \\
& 52000.35978 & 5 & I & $V$ & 0.0002 & Bor/AP7 \\
GSC~3822~1056&51731.3672&2& I & - & 0.0020 & B\'{\i}r/AP7 \\
& 51840.6029 & 3 & II & - & 0.0012 & Bor/AP7 \\
& 51842.6236 & 8 &  I & - & 0.0076 & B\'{\i}r/AP7 \\
& 51925.360  & 1 &  I & - & 0.003 & Bor/AP7 \\
& 51958.3628 & 3 & II & - & 0.0026 & Bor/AP7 \\
& 51967.5078 & 4 &  I & - & 0.0058 & Bor/AP7 \\
& 52000.3560 & 5 &  I & $V$ & 0.0056 & Bor/AP7 \\
}

}

\IBVSEremexp{Observer(s)/Instrument}

\IBVSEack{This work was partly supported by National Grant OTKA T030743.}

\references

Bartolini, C., Zoffoli, M., 1986, {\it A\&A}, {\bf 168}, 377

B\'\i r\'o, I.B., 2000, {\it A\&A}, {\bf 364}, 573

B\'\i r\'o, I.B., Borkovits, T., 2000, {\it IBVS} 4967

Kholopov, P.N., et al., 1985, {\it General Catalog of Variable Stars}, 4th Eds.

\endreferences

\end{document}



