\begin{table}%tA.1
\caption{Standard stars used for the magnitude scale definition of each observed field.}
\label{std}
      %\centering
\par
\begin{tabular}{clccc}
\hline
\hline
 Field     &  GSC2 name   & RA(2000)     & Dec(2000)      & $R$ mag \\
\hline                       
 1002$-$00 & S12121203157 & 10 03 07.247 & $-$00 20 52.80 & 15.88   \\
 1026$-$00 & S12120004610 & 10 25 54.636 & $-$00 04 05.29 & 15.81   \\
 1036$+$01 & N20310011951 & 10 36 03.198 & $+$01 57 50.01 & 16.67   \\ 
 1045$+$00 & N20020123674 & 10 45 27.082 & $+$00 26 38.51 & 16.63   \\
 1053$-$00 & S12013102499 & 10 53 59.120 & $-$00 57 07.98 & 15.78   \\
 1055$-$01 & S12013134345 & 10 55 45.967 & $-$01 26 38.83 & 15.83   \\
 1106$+$00 & N2002102736  & 11 06 44.789 & $+$00 04 23.30 & 15.56   \\
 1134$+$00 & N2000210760  & 11 34 24.908 & $+$00 09 22.80 & 16.25   \\
 1139$-$02 & S12003215130 & 11 38 55.494 & $-$02 03 48.55 & 16.34   \\
 1140$-$00 & S12000102281 & 11 40 18.739 & $-$00 30 28.04 & 16.65   \\
 1141$-$00 & S12000102432 & 11 41 38.253 & $-$00 28 24.10 & 16.59   \\
 1145$-$02 & S1200322301  & 11 45 19.259 & $-$02 48 24.62 & 15.96   \\
 1145$+$00 & N20000211863 & 11 45 50.451 & $+$00 14 28.74 & 15.81   \\
 1159$-$02 & S1200031962  & 11 59 21.166 & $-$02 43 03.89 & 15.11   \\
 1200$+$00 & N12000001088 & 12 00 22.134 & $+$00 06 25.84 & 16.42   \\
 1205$-$00 & S20000021747 & 12 05 55.459 & $-$00 40 07.58 & 16.13   \\
 1208$-$00 & S20000021893 & 12 08 00.074 & $-$00 38 42.07 & 15.10   \\
 1218$-$01 & S20003101017 & 12 18 36.504 & $-$01 16 31.96 & 16.47   \\
 1223$-$01 & S20002112306 & 12 23 42.524 & $-$01 53 01.92 & 15.85   \\
 1234$-$01 & S20002021494 & 12 34 40.338 & $-$01 29 28.60 & 15.27   \\
 1254$-$01 & S20021311531 & 12 54 34.142 & $-$01 15 54.62 & 15.39   \\
 1300$-$02 & S20023213907 & 13 00 19.358 & $-$02 24 31.19 & 16.35   \\
 1316$-$00 & S20020122684 & 13 16 41.468 & $-$00 27 21.27 & 16.28   \\
 1328$+$00 & N1201000669  & 13 28 22.040 & $+$00 03 58.83 & 16.29   \\
 1400$+$00 & N12121213738 & 14 00 15.893 & $+$00 23 41.79 & 15.98   \\
 1402$-$01 & S2021232715  & 14 02 06.761 & $-$01 26 44.35 & 16.42   \\
 1409$-$00 & S20212017779 & 14 09 07.170 & $-$00 00 37.65 & 16.02   \\
 1410$-$02 & S20232014778 & 14 10 42.436 & $-$02 27 13.09 & 16.27   \\
 1425$-$01 & S20201311703 & 14 25 20.602 & $-$01 18 56.53 & 16.13   \\
\hline
\end{tabular}
\par
\end{table}