SuprimeCam data (J.A. Smith et al. 2002). The limiting magnitudes of the images were 27.3, 25.6, 24.5, and 24.6 mag for the $B$, $R_{\rm{c}}$, $I_{\rm{c}}$ and $z'$-bands, respectively, for 1$\sigma$ detection within 2diameter. Photometric errors for each band were estimated as being equal or less than 0.1 magnitude, except for the $z'$-band ($\sim 0.2$). For a $z'$ photometric calibration, we used images taken by HST/ACS through F850LP filter, and confirmed the accuracy of our photometry to be less than 0.2 magnitude. We used the STSDAS synphot package to convert from F850LP magnitude to $z'$ magnitude. The seeing sizes were 0.6, 0.6, 0.55, and 0.7 arcsec for the $B$, $R_{\rm{c}}$, $I_{\rm{c}}$ and $z'$ band respectively.

We also retrieved Johnson $V$ image taken by SuprimeCam with 3600 seconds exposure from SMOKA(Subaru Mitaka Okayama Kiso Archive system) (Baba et al. 2002), and reduced it in the standard manner. We performed a photometric calibration using standard stars in SA 95 and SA 107(Landolt 1992), and estimated the limiting magnitude (2” aperture with 1$\sigma$) to be 26.7. We checked the catalog with published $V$ magnitude data of the same field (Stanford et al. 2002), and estimated the errors to be within 0.1 magnitude.

Near-Infrared Imaging
