\documentstyle[twoside,epsf,hyperref]{article}

\input ibvs3.sty
\input ibvse.sty

\begin{document}
\IBVSheadDOI{63}{6262}{12 August 2019}

\IBVStitle{CCD Minima for Selected Eclipsing Binaries in 2018}

\IBVSauth{Nelson, Robert H.}

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


\begintext

\IBVSEobs{Mountain Ash Observatory (MAO):  33 cm f/4.5 Newtonian on a Paramount ME\\
Desert Blooms Observatory (DBO):  40 cm f/6.8 SCT on a Paramount Taurus 400}

\IBVSEdet{MAO:  SBIG ST--10XME, 6.8 $\mu$m pixels, FOV: 34.4\arcm$\times$23.2\arcm, --10\deg $> T >$ --30\deg C;
DBO:  SBIB STT--1603, 9.0 $\mu$ pixels, FOV: 18.3\arcm$\times$11.5\arcm, --10\deg $> T >$ --30\deg C}

\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).}

%\small
\begin{center}
\begin{tabular}{|lllcclll|}
\hline
\multicolumn{2}{|l}{\bf Times of minima:}   &     &     &     &      &  &   \\
\hline
Star name  &  GCVS  &  Time of Min  &  Error  &  Ecl.   &  Obs.  &   Filter  & O--C\\
~   &  type  &  HJD-2400000  &  (days)  &   Type   &     &     &  (days)\\
\hline
BX And  &  EW/DW  &  58384.8386  &  0.0001  &  I  &  mao  &  c  &  -0.0004\\
LO And  &  EW/KW  &  58397.6610  &  0.0003  &  II  &  mao  &  c  &  -0.0346\\
QX And  &  EW  &  58377.8063  &  0.0005  &  II  &  DBO  &  \textit{BVRI}  &  0.0013\\
QX And  &  EW  &  58466.6305  &  0.0005  &  I  &  DBO  &  c  &  0.0024\\
V0404 And  &  EA/RS  &  58394.6588  &  0.0003  &  I  &  mao  &  c  &  -0.0007\\
V0530 And  &  EB  &  58396.6929  &  0.0002  &  I  &  mao  &  \textit{VRI}  &  0.0005\\
G2837--1343   &  na  &  58391.7108  &  0.0002  &  II  &  mao  &  \textit{R}  &  0.0399\\
V1814 Aql  &  EA  &  58250.9462  &  0.0006  &  I  &  DBO  &  c  &  0.0002\\
CX Aqr  &  EA/SD  &  58377.7753  &  0.0002  &  I  &  DBO  &  c  &  0\\
SS Ari  &  EW/KW  &  58350.8589  &  0.0002  &  I  &  mao  &  c  &  0.0004\\
BM Ari  &  EW          &  58454.7159  &  0.0003  &  II  &  DBO  &  c  &  0.0025\\
BN Ari  &  EW/KW  &  58343.8804  &  0.0003  &  I  &  mao  &  c  &  0.0029\\
AH Aur  &  EW/DW  &  58396.0016  &  0.0003  &  I  &  mao  &  \textit{VRI}  &  -0.0004\\
EP Aur  &  EB  &  58389.9048  &  0.0002  &  I  &  mao  &  c  &  -0.0013\\
V0410 Aur  &  EW  &  58394.907  &  0.015  &  II  &  mao  &  \textit{VRI}  &  -0.0087\\
V0599 Aur  &  EW  &  58374.9446  &  0.0002  &  I  &  DBO  &  c  &  0.0015\\
TY Boo  &  EW/KW  &  58205.8350  &  0.0004  &  II  &  mao  &  c  &  -0.0006\\
TZ Boo  &  EW/KW  &  58173.8809  &  0.0002  &  I  &  mao  &  c  &  -0.0052\\
TZ Boo  &  EW/KW  &  58260.8003  &  0.0004  &  II  &  DBO  &  \textit{VRI}  &  -0.006\\
TZ Boo  &  EW/KW  &  58261.6918  &  0.0004  &  II  &  DBO  &  c  &  -0.006\\
TZ Boo  &  EW/KW  &  58261.8426  &  0.0005  &  I  &  DBO  &  c  &  -0.0038\\
VW Boo  &  EW/KW  &  58207.9287  &  0.0005  &  I  &  DBO  &  \textit{VRI}  &  0\\
GM Boo  &  EW  &  58208.8832  &  0.0003  &  II  &  mao  &  \textit{VRI}  &  0.0003\\
GN Boo  &  EW  &  58175.9543  &  0.0004  &  I  &  mao  &  c  &  0.0009\\
GN Boo  &  EW  &  58213.8040  &  0.0007  &  II  &  mao  &  \textit{VRI}  &  -0.0008\\
GN Boo  &  EW  &  58237.7821  &  0.0002  &  I  &  DBO  &  c  &  -0.0002\\
GN Boo  &  EW  &  58237.9337  &  0.0003  &  II  &  DBO  &  \textit{VRI}  &  0.0006\\
GN Boo  &  EW  &  58251.8080  &  0.0003  &  II  &  mao  &  c  &  0.0011\\
GN Boo  &  EW  &  58291.7671  &  0.0003  &  I  &  DBO  &  c  &  -0.0023\\
GT Boo  &  EB  &  58247.7722  &  0.0004  &  I  &  mao  &  \textit{I}  &  0.0004\\
IK Boo  &  EW  &  58171.8683  &  0.0002  &  I  &  mao  &  c  &  -0.0002\\
PU Boo  &  EW  &  58167.8911  &  0.0002  &  I  &  mao  &  \textit{R}  &  -0.0037\\
V0339 Boo  &  EW  &  58174.0024  &  0.0002  &  II  &  mao  &  c  &  0.0014\\
V0339 Boo  &  EW  &  58210.829  &  0.001  &  I  &  mao  &  c  &  0.0029\\
CP Cam  &  EB  &  58483.6092  &  0.0003  &  I  &  mao  &  c  &  -0.0011\\
CV Cam  &  EB  &  58375.8630  &  0.0003  &  I  &  mao  &  c  &  0.0014\\
OQ Cam  &  EW  &  58396.811  &  0.002  &  I  &  mao  &  \textit{V}  &  0.002\\
V0337 Cam  &  EB          &  58442.6576  &  0.0001  &  I  &  mao  &  c  &  0.0009\\
V0447 Cam  &  EB  &  58397.9361  &  0.0005  &  I  &  mao  &  \textit{BVR}  &  0.0059\\
V0473 Cam  &  EW          &  58390.9625  &  0.0004  &  I  &  mao  &  \textit{R}  &  -0.001\\
V0474 Cam  &  EW          &  58392.9503  &  0.0002  &  I  &  mao  &  \textit{V}  &  0.0002\\
G3715--0043   &  E  &  58374.8695  &  0.0004  &  II  &  mao  &  c  &  -0.0027\\
\hline
\end{tabular}
\end{center}

\begin{center}
\begin{tabular}{|lllcclll|}
\hline
\multicolumn{2}{|l}{\bf Times of minima:}   &     &     &     &      &  &   \\
\hline
Star name  &  GCVS  &  Time of Min  &  Error  &  Ecl.   &  Obs.  &   Filter  &  O-C\\
~   &  type  &  HJD-2400000  &  (days)  &   Type   &     &     &  (days)\\
\hline
ZZ Cas  &  EB/KE  &  58370.860  &  0.001  &  II  &  DBO  &  c  &  0.0018\\
GT Cas  &  EA/SD  &  58369.8164  &  0.0003  &  I  &  DBO  &  \textit{BVI}  &  -0.0017\\
IR Cas  &  EB  &  58390.8032  &  0.0002  &  I  &  DBO  &  \textit{BVRI}  &  -0.0024\\
IR Cas  &  EB  &  58391.8266  &  0.0002  &  II  &  DBO  &  \textit{R}  &  0\\
MN Cas  &  EA/DM  &  58378.8299  &  0.0005  &  I  &  DBO  &  \textit{R}  &  -0.0014\\
V0608 Cas  &  E:  &  58390.8227  &  0.0003  &  I  &  mao  &  \textit{R}  &  0\\
XY Cep  &  EA/SD  &  58379.7395  &  0.0002  &  I  &  DBO  &  c  &  0.0135\\
V0957 Cep  &  EA  &  58367.7675  &  0.0003  &  I  &  mao  &  c  &  0.0041\\
UZ CMi  &  EW/DW  &  58464.8710  &  0.0003  &  I  &  mao  &  c  &  0.0049\\
XZ CMi  &  EA  &  58170.6598  &  0.0002  &  I  &  mao  &  c  &  0.0008\\
TX Cnc  &  EW/KW  &  58438.9332  &  0.0004  &  I  &  mao  &  \textit{BVR}  &  -0.002\\
EH Cnc  &  EW  &  58216.6716  &  0.0002  &  II  &  DBO  &  \textit{VRI}  &  0\\
HN Cnc  &  EW  &  58164.6977  &  0.0002  &  I  &  mao  &  \textit{R}  &  0.0024\\
G1936--0040   &  ESD-EC  &  58450.8507  &  0.0007  &  II  &  DBO  &  c  &  0.0006\\
RW Com  &  EW/KW  &  58159.8050  &  0.0005  &  II  &  mao  &  c  &  0\\
RZ Com  &  EW/KW  &  58169.8508  &  0.0002  &  II  &  mao  &  c  &  0.001\\
RZ Com  &  EW/KW  &  58246.8611  &  0.0004  &  I  &  DBO  &  \textit{B}  &  0.0008\\
RZ Com  &  EW/KW  &  58250.7519  &  0.0003  &  II  &  DBO  &  c  &  -0.0013\\
RZ Com  &  EW/KW  &  58253.7986  &  0.0002  &  II  &  DBO  &  c  &  -0.0011\\
CC Com  &  EW/KW  &  58196.7724  &  0.0001  &  I  &  mao  &  c  &  0.0003\\
RW CrB  &  EA/SD:  &  58189.9658  &  0.0003  &  I  &  mao  &  \textit{R}  &  0.0017\\
AR CrB  &  EW  &  58246.7039  &  0.0002  &  I  &  DBO  &  \textit{BVI}  &  -0.0007\\
AS CrB  &  EW  &  58206.9171  &  0.0006  &  I  &  DBO  &  c  &  0.0031\\
BX CrB  &  EW  &  58254.8370  &  0.0004  &  I  &  DBO  &  c  &  -0.0005\\
DF CVn  &  EW  &  58195.7101  &  0.0003  &  I  &  mao  &  c  &  -0.0009\\
DL CVn  &  EB  &  58190.7488  &  0.0005  &  II  &  DBO  &  \textit{BVI}  &  0.0039\\
DR CVn  &  EW?  &  58176.0200  &  0.0004  &  II  &  DBO  &  c  &  0\\
DR CVn  &  EW?  &  58179.9638  &  0.0007  &  II  &  DBO  &  c  &  -0.0049\\
DR CVn  &  EW?  &  58180.961  &  0.001  &  II  &  DBO  &  \textit{VRI}  &  -1041.5\\
DR CVn  &  EW?  &  58189.8349  &  0.0005  &  II  &  DBO  &  \textit{R}  &  0.0051\\
DR CVn  &  EW?  &  58193.953  &  0.002  &  I  &  DBO  &  \textit{BVI}  &  -0.0008\\
DX CVn  &  EW?  &  58208.7058  &  0.0006  &  II  &  mao  &  \textit{VRI}  &  -0.0007\\
EG CVn  &  EW?  &  58195.7931  &  0.0002  &  II  &  DBO  &  \textit{R}  &  -0.0021\\
GM CVn  &  EW  &  58271.8634  &  0.0004  &  I  &  DBO  &  \textit{I}  &  -0.0015\\
WZ Cyg  &  EB  &  58259.8702  &  0.0004  &  II  &  mao  &  \textit{R}  &  0.0002\\
GO Cyg  &  EB/KE  &  58256.9240  &  0.0002  &  I  &  mao  &  c  &  -0.0016\\
GO Cyg  &  EB/KE  &  58275.945  &  0.001  &  II  &  DBO  &  \textit{VI}  &  -0.0014\\
GO Cyg  &  EB/KE  &  58279.8928  &  0.0005  &  I  &  DBO  &  \textit{BVI}  &  -0.0013\\
GO Cyg  &  EB/KE  &  58289.9414  &  0.0004  &  I  &  DBO  &  \textit{BVI}  &  -0.0014\\
GO Cyg  &  EB/KE  &  58293.888  &  0.001  &  II  &  DBO  &  c  &  -0.0025\\
V0401 Cyg  &  EW/KE  &  58244.9033  &  0.0008  &  I  &  mao  &  \textit{BVI}  &  0.0025\\
V0456 Cyg  &  EA/SD:  &  58224.9254  &  0.0001  &  I  &  mao  &  c  &  -0.0005\\
V1918 Cyg  &  EW/KW  &  58251.8950  &  0.0003  &  II  &  mao  &  \textit{R}  &  -0.0005\\
\hline
\end{tabular}
\end{center}

\begin{center}
\begin{tabular}{|lllcclll|}
\hline
\multicolumn{2}{|l}{\bf Times of minima:}   &     &     &     &      &  &   \\
\hline
Star name  &  GCVS  &  Time of Min  &  Error  &  Ecl.   &  Obs.  &   Filter  &  O-C\\
~   &  type  &  HJD-2400000  &  (days)  &   Type   &     &     &  (days)\\
\hline
V2197 Cyg  &  E  &  58297.8412  &  0.0002  &  I  &  DBO  &  c  &  0\\
V2282 Cyg  &  EW  &  58242.8628  &  0.0002  &  II  &  DBO  &  \textit{R}  &  -0.0002\\
V2282 Cyg  &  EW  &  58260.8366  &  0.0004  &  II  &  mao  &  \textit{VRI}  &  0.0006\\
V2364 Cyg  &  EW  &  58242.9638  &  0.0003  &  II  &  DBO  &  c  &  0.0019\\
V2477 Cyg  &  EW  &  58223.9324  &  0.0002  &  I  &  mao  &  c  &  -0.0002\\
V2643 Cyg  &  EB  &  58357.755  &  0.001  &  II  &  mao  &  \textit{BVI}  &  0.0086\\
AX Dra  &  EB  &  58169.771  &  0.001  &  II  &  mao  &  c  &  -0.0012\\
BE Dra  &  EB/KE  &  58255.8986  &  0.0007  &  I  &  mao  &  c  &  -0.0007\\
V0357 Dra  &  EW  &  58197.8948  &  0.0005  &  I  &  DBO  &  c  &  0.0022\\
V0373 Dra  &  EW  &  58255.7708  &  0.0004  &  I  &  mao  &  c  &  0.0019\\
V0374 Dra  &  EW  &  58210.9524  &  0.0004  &  II  &  mao  &  \textit{VRI}  &  0.0022\\
V0380 Dra  &  EA  &  58272.7057  &  0.0002  &  I  &  DBO  &  \textit{B}  &  -0.0041\\
V0402 Dra  &  EW  &  58267.8907  &  0.0003  &  II  &  mao  &  c  &  0.011\\
V0450 Dra  &  EW          &  58210.715  &  0.001  &  I  &  mao  &  c  &  -0.0002\\
V0509 Dra  &  EW          &  58270.8751  &  0.0003  &  I  &  DBO  &  \textit{V}  &  0.0001\\
G3864--1315   &  E?  &  58210.7704  &  0.0003  &  I  &  DBO  &  c  &  0.0001\\
G3870--1172   &  EW  &  58223.8601  &  0.0002  &  I  &  mao  &  c  &  0.0006\\
G3929--1500   &  EW  &  58267.7953  &  0.0002  &  I  &  mao  &  \textit{VRI}  &  0\\
G4449--0995   &  EW  &  58188.9538  &  0.0004  &  I  &  mao  &  c  &  0\\
WW Gem  &  EB/KE  &  58158.7042  &  0.0003  &  I  &  mao  &  c  &  -0.0034\\
GW Gem  &  EB/SD  &  58389.9731  &  0.0004  &  II  &  mao  &  c  &  -0.0006\\
V0373 Gem  &  EB  &  58460.783  &  0.002  &  II  &  mao  &  \textit{BVRI}  &  0\\
V0404 Gem  &  EW  &  58450.7982  &  0.0003  &  I  &  DBO  &  c  &  -0.0006\\
G1886--1869   &  EC  &  58396.9663  &  0.0003  &  I  &  mao  &  c  &  -0.0002\\
SZ Her  &  EA/SD  &  58168.9725  &  0.0001  &  I  &  mao  &  c  &  -0.0009\\
V0842 Her  &  EW  &  58189.8680  &  0.0002  &  I  &  mao  &  \textit{R}  &  0.0013\\
V0878 Her  &  EB  &  58246.8374  &  0.0002  &  II  &  mao  &  \textit{V}  &  0.001\\
V1033 Her  &  EW?  &  58224.8852  &  0.0001  &  I  &  DBO  &  c  &  0.0025\\
V1035 Her  &  EA  &  58224.8367  &  0.0007  &  II  &  mao  &  c  &  -0.0015\\
V1047 Her  &  EW  &  58261.8062  &  0.0004  &  II  &  mao  &  c  &  -0.0015\\
V1097 Her  &  EW  &  58212.9825  &  0.0002  &  II  &  DBO  &  \textit{VRI}  &  -0.0047\\
V1097 Her  &  EW  &  58220.9263  &  0.0002  &  II  &  DBO  &  \textit{VRI}  &  0.0003\\
V1097 Her  &  EW  &  58253.9439  &  0.0001  &  I  &  DBO  &  \textit{R}  &  0.0001\\
V1103 Her  &  EW  &  58195.9446  &  0.0002  &  II  &  DBO  &  c  &  0.0005\\
V1160 Her  &  EW          &  58224.7783  &  0.0004  &  II  &  mao  &  c  &  -0.0027\\
V1167 Her  &  EW?  &  58210.9671  &  0.0002  &  I  &  DBO  &  \textit{VRI}  &  -0.0004\\
V1198 Her  &  EW  &  58289.7359  &  0.0003  &  II  &  DBO  &  \textit{VRI}  &  0.0054\\
V1233 Her  &  EW  &  58256.7670  &  0.0002  &  II  &  mao  &  \textit{R}  &  0\\
G2058--0753   &  E  &  58249.8858  &  0.0003  &  II  &  DBO  &  c  &  0.0001\\
G2093--1834   &  EB  &  58256.8930  &  0.0001  &  I  &  DBO  &  \textit{V}  &  0\\
AV Hya  &  EB/KE  &  58159.889  &  0.005  &  II  &  DBO  &  c  &  0.0021\\
AV Hya  &  EB/KE  &  58172.865  &  0.003  &  II  &  DBO  &  c  &  -0.0065\\
AV Hya  &  EB/KE  &  58179.709  &  0.001  &  II  &  DBO  &  \textit{VRI}  &  0.0035\\
\hline
\end{tabular}
\end{center}

\begin{center}
\begin{tabular}{|lllcclll|}
\hline
\multicolumn{2}{|l}{\bf Times of minima:}   &     &     &     &      &  &   \\
\hline
Star name  &  GCVS  &  Time of Min  &  Error  &  Ecl.   &  Obs.  &   Filter  &  O-C\\
~   &  type  &  HJD-2400000  &  (days)  &   Type   &     &     &  (days)\\
\hline
AV Hya  &  EB/KE  &  58180.7346  &  0.0007  &  I  &  DBO  &  \textit{BVI}  &  0.004\\
AV Hya  &  EB/KE  &  58183.8052  &  0.0005  &  II  &  DBO  &  c  &  -0.0007\\
AV Hya  &  EB/KE  &  58193.7163  &  0.0002  &  I  &  DBO  &  c  &  0.0011\\
DF Hya  &  EW/KW  &  58462.9370  &  0.0002  &  II  &  DBO  &  \textit{R}  &  0.0024\\
EU Hya  &  EA/DW  &  58187.7328  &  0.0005  &  I  &  DBO  &  c  &  0.0011\\
V0488 Lac  &  EW          &  58350.7507  &  0.0004  &  II  &  mao  &  \textit{BVI}  &  0\\
Y Leo  &  EA/SD  &  58159.7092  &  0.0002  &  I  &  mao  &  c  &  0.0065\\
DU Leo  &  EA/SD  &  58218.7406  &  0.0003  &  II  &  DBO  &  \textit{VRI}  &  0.0004\\
ET Leo  &  EW?  &  58171.756  &  0.002  &  II  &  mao  &  c  &  0.0004\\
MW Leo  &  EA?  &  58472.9151  &  0.0003  &  I  &  DBO  &  c  &  -0.0001\\
WZ LMi  &  EW  &  58189.7497  &  0.0004  &  II  &  mao  &  \textit{R}  &  0.0036\\
AG LMi  &  EA  &  58162.9487  &  0.0002  &  I  &  DBO  &  c  &  0.0004\\
AG LMi  &  EA  &  58220.7063  &  0.0002  &  I  &  DBO  &  c  &  -0.0002\\
AG LMi  &  EA  &  58222.7451  &  0.0002  &  II  &  DBO  &  c  &  0.0001\\
AG LMi  &  EA  &  58254.6819  &  0.0002  &  I  &  DBO  &  c  &  0\\
SW Lyn  &  EA/DW  &  58224.7179  &  0.0003  &  I  &  DBO  &  \textit{R}  &  -0.0097\\
V0591 Lyr  &  EW  &  58268.8121  &  0.0003  &  II  &  DBO  &  \textit{R}  &  -0.0001\\
V0591 Lyr  &  EW  &  58269.8632  &  0.0002  &  I  &  mao  &  \textit{B}  &  -0.0004\\
V0592 Lyr  &  EW  &  58253.8375  &  0.0002  &  II  &  mao  &  c  &  0.0008\\
V0653 Lyr  &  EW  &  58264.7957  &  0.0005  &  II  &  mao  &  \textit{R}  &  0.0005\\
V0658 Lyr  &  EW  &  58369.68  &  0.01  &  I  &  DBO  &  \textit{BVI}  &  -0.0045\\
V0664 Lyr  &  EW  &  58210.8802  &  0.0004  &  II  &  DBO  &  c  &  0\\
V0740 Lyr  &  EW  &  58205.939  &  0.002  &  II  &  mao  &  c  &  0.0017\\
G3104--1085   &  EW?  &  58258.8184  &  0.0004  &  I  &  DBO  &  c  &  0.0008\\
G3104--1085   &  EW?  &  58268.7924  &  0.0003  &  I  &  DBO  &  c  &  0.0006\\
G3104--1085   &  EW?  &  58269.8795  &  0.0004  &  II  &  mao  &  \textit{BVI}  &  0.0036\\
V0927 Mon  &  EW  &  58168.6524  &  0.0002  &  I  &  mao  &  c  &  -0.0004\\
ES Ori  &  EA/DM  &  58465.8017  &  0.0005  &  I  &  DBO  &  c  &  -0.0003\\
V1363 Ori  &  EW  &  58483.7341  &  0.0003  &  II  &  mao  &  c  &  0.0023\\
V1848 Ori  &  EW  &  58437.9035  &  0.0003  &  II  &  DBO  &  c  &  -0.0001\\
V1848 Ori  &  EW  &  58462.8071  &  0.0005  &  I  &  DBO  &  \textit{R}  &  -0.0002\\
V0481 Peg  &  EW  &  58370.752  &  0.001  &  I  &  mao  &  c  &  0.0017\\
V0619 Peg  &  EW  &  58394.7546  &  0.0003  &  II  &  mao  &  \textit{BVI}  &  -0.0008\\
IT Per  &  EA/SD  &  58397.9225  &  0.0006  &  I  &  DBO  &  c  &  -0.0034\\
IT Per  &  EA/SD  &  58440.8692  &  0.0003  &  I  &  DBO  &  \textit{BVR}  &  -0.0007\\
IT Per  &  EA/SD  &  58444.714  &  0.003  &  II  &  DBO  &  \textit{V}  &  0.0099\\
KW Per  &  EB/SD  &  58397.7904  &  0.0002  &  I  &  mao  &  c  &  0.0003\\
V0873 Per  &  EW  &  58441.6127  &  0.0003  &  II  &  mao  &  \textit{BVR}  &  -0.0006\\
V0881 Per  &  EW/KW  &  58380.8957  &  0.0007  &  I  &  mao  &  \textit{BVRI}  &  -0.0045\\
V0881 Per  &  EW/KW  &  58474.6429  &  0.0003  &  I  &  mao  &  c  &  -0.0024\\
V0959 Per  &  EA  &  58441.7096  &  0.0002  &  I  &  mao  &  \textit{BVR}  &  0.0004\\
CP Psc  &  EB:  &  58450.7422  &  0.0003  &  I  &  DBO  &  c  &  -0.001\\
DV Psc  &  E/RS  &  58466.5896  &  0.0002  &  I  &  DBO  &  c  &  0.0025\\
\hline
\end{tabular}
\end{center}

\begin{center}
\begin{tabular}{|lllcclll|}
\hline
\multicolumn{2}{|l}{\bf Times of minima:}   &     &     &     &      &  &   \\
\hline
Star name  &  GCVS  &  Time of Min  &  Error  &  Ecl.   &  Obs.  &   Filter  &  O-C\\
~   &  type  &  HJD-2400000  &  (days)  &   Type   &     &     &  (days)\\
\hline
HL Psc  &  EB/RS  &  58464.5964  &  0.0003  &  II  &  mao  &  c  &  -0.0022\\
AU Ser  &  EW/KW:  &  58257.7919  &  0.0002  &  II  &  mao  &  c  &  -0.0012\\
V0384 Ser  &  EW?  &  58236.9110  &  0.0003  &  I  &  DBO  &  c  &  0.0001\\
RZ Tau  &  EW/DW  &  58369.9830  &  0.0002  &  II  &  DBO  &  \textit{R}  &  0.0011\\
RZ Tau  &  EW/DW  &  58372.8933  &  0.0004  &  II  &  DBO  &  c  &  0.0016\\
RZ Tau  &  EW/DW  &  58373.9321  &  0.0003  &  I  &  DBO  &  c  &  0.0012\\
RZ Tau  &  EW/DW  &  58378.9199  &  0.0002  &  I  &  DBO  &  \textit{R}  &  0.0009\\
RZ Tau  &  EW/DW  &  58379.9587  &  0.0004  &  II  &  DBO  &  c  &  0.0005\\
AN Tau  &  EB/DM  &  58367.9374  &  0.0004  &  II  &  mao  &  \textit{BVI}  &  0.0029\\
EQ Tau  &  EW/DW  &  58395.8948  &  0.0003  &  I  &  mao  &  \textit{VRI}  &  -0.0016\\
V1238 Tau  &  EW  &  58384.9544  &  0.0001  &  II  &  mao  &  \textit{BVRI}  &  -0.0056\\
V1369 Tau  &  EA  &  58450.9152  &  0.0005  &  I  &  DBO  &  \textit{R}  &  0.0023\\
G1804--0539   &  E  &  58391.8365  &  0.0004  &  I  &  mao  &  c  &  0.0002\\
V Tri  &  EB/SD  &  58456.6086  &  0.0001  &  I  &  DBO  &  c  &  0.0023\\
RS Tri  &  EA/DM  &  58476.6315  &  0.0003  &  I  &  DBO  &  c  &  0.0072\\
RV Tri  &  EA/SD  &  58471.7778  &  0.0002  &  I  &  DBO  &  c  &  0.0009\\
TY UMa  &  EW/KW  &  58199.7167  &  0.0003  &  I  &  DBO  &  c  &  -0.0037\\
XY UMa  &  EB/DW/RS  &  58250.6710  &  0.0004  &  II  &  DBO  &  c  &  -0.0023\\
ES UMa  &  EW  &  58158.8296  &  0.0004  &  II  &  mao  &  \textit{V}  &  -0.0002\\
HV UMa  &  EW  &  58161.862  &  0.001  &  II  &  mao  &  c  &  -0.0021\\
HV UMa  &  EW  &  58180.701  &  0.002  &  I  &  mao  &  \textit{VRI}  &  0.0017\\
HV UMa  &  EW  &  58182.831  &  0.002  &  I  &  mao  &  \textit{R}  &  -0.0006\\
HV UMa  &  EW  &  58185.6709  &  0.0005  &  I  &  mao  &  c  &  -0.0037\\
MQ UMa  &  EW  &  58461.9538  &  0.0004  &  I  &  mao  &  c  &  0.0039\\
V0354 UMa  &  EW  &  58463.0124  &  0.0008  &  II  &  DBO  &  \textit{R}  &  0.005\\
VY UMi  &  EW  &  58188.8980  &  0.0002  &  II  &  mao  &  c  &  0.0057\\
AH Vir  &  EW/KW  &  58168.884  &  0.001  &  II  &  mao  &  \textit{R}  &  -0.0025\\
AZ Vir  &  EW/KW  &  58196.8748  &  0.0003  &  II  &  mao  &  c  &  0.0081\\
BO Vul  &  EA/SD  &  58370.8030  &  0.0001  &  i  &  DBO  &  c  &  0.0003\\
BO Vul  &  EA/SD  &  58373.721  &  0.002  &  II  &  DBO  &  c  &  -0.0005\\
\hline
\end{tabular}
\end{center}


\IBVSErem{ To save space, GSC star names have been shortened to a leading "G" only; times of minimum are heliocentric Julian dates with the leading 24 removed. \\
O--C values were computed using elements computed from the O--C database listed in the references (Nelson, 2016).\\
The observatory, Desert Blooms in Benson AZ, is described in Nelson (2017).}

\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, http://cleardarksky.com/

Kwee, K. K., van Woerden, H., 1956, \textit{Bull. Astron. Inst. Netherlands}, {\bf 12}, 327

Nelson, R.H. 2016, Bob Nelson's O-C Files,  http://www.aavso.org/bob-nelsons-o-c-files

Nelson, R.H., 2017, \textit{IBVS}, No. 5224

Satellite Images for North America, http://gfx.weatheroffice.ec.gc.ca/

\endreferences

\end{document}
