\documentstyle[twoside]{article}

\input ibvs2.sty
\input ibvse.sty

\begin{document}
\IBVShead{6050}{8 March 2013}

\IBVStitle{CCD Minima for Selected Eclipsing Binaries in 2012}

\IBVSauth{Nelson, Robert H.}

\IBVSinsto{1393 Garvin Street, Prince George, BC, Canada, V2M 3Z1, e-mail: bob.nelson@shaw.ca}

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

\begintext

\IBVSEobs{Sylvester Robotic Observatory (SyRO):  33 cm f/4.5 Newtonian on a Paramount ME } 

\IBVSEdet{Wright CCD camera, Peltier cooling, EEV ZYa7 chip, $5\arcm \times 7\arcm$ FOV, 758 $\times$ 1061 pixels.}

\IBVSEred{Bias and dark subtraction, flat-fielding using light-box flats; aperture photometry--all using MIRA, by Mirametrics.  Check stars were used throughout.}

\IBVSEmethod{Digital tracing paper method, bisection of chords, curve fitting, and (occasionally) Kwee and van Woerden (1956)}

\IBVSEmins{
BX And&56206.7650&0.0001&I&R&\\
LO And&56114.8274&0.0002&I&VRI&\\
LO And&56117.8716&0.0005&I&VRI&\\
LO And&56118.8233&0.0002&II&VRI&\\
BO Ari&56167.946&0.002&II&VRI& \\
V0599 Aur&56221.8936&0.0003&I&c& \\
V0644 Aur&56266.7145&0.0005&I&c& \\
AC Boo&55928.0411&0.0002&II&c& \\
DN Boo&56022.7913&0.0003&I&R& \\
GR Boo&55938.0573&0.0002&II&c& \\
GT Boo&55937.94459&0.0004&I&c& \\
IK Boo&55937.0004&0.0002&I&c& \\
CD Cam&55939.7940&0.0002&II&c& \\
NR Cam&55937.6349&0.0005&II&R& \\
OQ Cam&56205.8503&0.0001&I&R& \\
PQ Cam&55942.5967&0.0001&II&c& \\
V0447 Cam&56280.8158&0.0005&I&c& \\
V0517 Cam&55981.7173&0.0004&I&c& \\
WZ Cep&56121.8942&0.0003&I&c& \\
G4475-0618 Cep&56122.7914&0.0003&I&c& \\
G4267-0588 Cep&56210.6422&0.0002&I&R&(a)\\
G4267-0682 Cep&56210.6605&0.0001&I&R& \\
G4481-0080 Cep&56215.6783&0.0005&I&c& \\
TX Cnc&55944.8369&0.0002&I&c& \\
IR Cnc&56249.8917&0.0005&I&c& \\
RW Com&55932.8908&0.0002&I&c& \\
CC Com&55939.9368&0.0001&II&c& \\
LT Com&55992.8843&0.0003&I&R& \\
MM Com&56023.7542&0.0004&II&c& \\
TW CrB&56026.8778&0.0002&I&VRI& \\
AR CrB&55940.0777&0.0001&I&c& \\
BO CVn&56012.8749&0.0002&II&R& \\
DQ CVn&56011.6998&0.0003&I&c& \\
EY CVn&56015.7324&0.0004&II&c& \\
FV CVn&56010.8612&0.0004&I&c& \\
GM CVn&56014.7339&0.0003&II&R& \\
GN CVn&55945.9039&0.0002&I&c& \\
V0700 Cyg&56013.0066&0.0001&II&c& \\
V1187 Cyg&56011.0094&0.0005&II&c& \\
V1191 Cyg&56010.9962&0.0003&II&c& \\
V2197 Cyg&56143.7546&0.0003&I&VRI& \\
V2197 Cyg&56146.7823&0.0002&II&VRI& \\
V2197 Cyg&56149.8858&0.0002&I&VRI& \\
BL Dra&56119.7962&0.0004&I&R& \\
BX Dra&56019.8048&0.0002&II&c& \\
DD Dra&56058.957&0.002&I&c& \\
FX Dra&56017.9214&0.0003&II&R& \\
GZ Dra&56021.936&0.001&I&c& \\
}

\IBVSEmins{
G3888-0464 Dra&56008.8950&0.0003&I&c& \\
G4428-1574 Dra&56017.8201&0.0001&I&c& \\
G3900-0615 Dra&56022.8906&0.0003&II&c& \\
AC Gem&55945.7102&0.0003&I&c& \\
V0450 Her&55946.0039&0.0001&I&c& \\
V0731 Her&56024.8529&0.0003&I&c& \\
V0829 Her&56009.9040&0.0002&II&R&\\
V0829 Her&56023.872&0.001&II&c& \\
V0857 Her&55984.886&0.004&II&c& \\
V1066 Her&55980.9925&0.0005&I&c& \\
V1073 Her&55992.9961&0.0001&I&c& \\
V1091 Her&56019.9692&0.0004&I&c& \\
V1097 Her&56024.9749&0.0002&I&c& \\
V1097 Her&56061.7807&0.0002&I&VRI& \\
V1097 Her&56072.7903&0.0015&II&VRI& \\
V1100 Her&56059.8007&0.0002&II&VRI& \\
V1100 Her&56060.8415&0.0002&II&VRI& \\
V1100 Her&56071.769&0.001&I&VRI& \\
V1100 Her&56073.8503&0.0004&I&VRI& \\
V1100 Her&56089.8106&0.0002&I&VRI& \\
G2587-1888 Her&56011.7973&0.0003&I&c& \\
G2587-1888 Her&56011.9532&0.0003&II&c& \\
G3621-0711 Lac&56122.855&0.001&I&R& \\
XZ Leo&55945.8032&0.0001&I&c& \\
AM Leo&56025.712&0.0003&I&R& \\
ET Leo&56013.735&0.001&II&c& \\
GU Leo&55984.7157&0.0001&II&c& \\
HI Leo&55941.9466&0.0001&I&c& \\
G1965-0735 Leo&56006.6928&0.0003&II&R& \\
XY LMi&56280.9573&0.0005&I&c& \\
AG LMi&55936.8803&0.0002&I&c& \\
FG Lyn&56275.8813&0.0005&II&R& \\
V1363 Ori&55944.6503&0.0002&II&c&(b)\\
U Peg&56209.6587&0.0001&I&R& \\
BN Peg&56124.8728&0.0001&I&R& \\
BN Peg&56128.7993&0.0005&II&VRI& \\
V0404 Peg&56120.8570&0.0002&II&R& \\
G1684-0522 Peg&56207.6524&0.0003&II&c& \\
RZ Tau&55938.6772&0.0001&II&R& \\
CU Tau&56207.8158&0.0007&II&VRI& \\
CU Tau&56209.879&0.001&II&VRI& \\
CU Tau&56210.9095&0.0005&I&VRI& \\
V0781 Tau&56217.8548&0.0005&I&c& \\
ES UMa&56012.7443&0.0003&II&R& \\
KM UMa&56010.7147&0.0003&I&c& \\
MQ UMa&55937.8357&0.0004&I&c& \\
MS UMa&55938.885&0.001&II&c& \\
QT UMa&55932.8144&0.0002&II&c& \\
}

\IBVSEmins{
RU UMi&55927.8576&0.0001&I&c& \\
WW UMi&56275.9918&0.0005&II&c& \\
AZ Vir&56021.7800&0.0003&I&c& \\
PS Vir&56026.7135&0.0002&II&c& \\
PY Vir&56024.775&0.002&I&c& \\
G2157-0387 Vul&56121.8229&0.0005&I&c& \\
}


\IBVSEremexp{Star name G denotes GSC\\
(a)  New variable - field of G4267-0682  P = 2.632979 days\\
(b)  New period:  P = 0.6629525 days}

\IBVSEack{Thanks are due to Environment Canada for the website satellite views (see reference below) that were essential in predicting clear times for observing runs in this cloudy locale.  Thanks are also due to Attilla Danko for his Clear Sky Charts, (see below).  
This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France}


\references
Danko, A., Clear Sky Charts, {\tt http://cleardarksky.com/}

Kwee, K.K., \& van Woerden, H., 1956, B.A.N. 12, (464), 327-330

Satellite Images for North America, {\tt http://www.weatheroffice.gc.ca/}
\endreferences


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\IBVSerratum{6050}

The detector given in the article is incorrect. It should
be 

\IBVSEdet{SBIG ST-10XME, 6\farcs8 pixels, 34\farcm4 $\times$ 23\farcm2 FOV, $-$10 $<$ T $<$ $-$30$^{\circ}$C}

\bigskip

The Author
\bigskip

\IBVSCorrectedVersion{Mar 9 20:29:50 CET 2013}

\end{document}


