We present the source catalog and the properties of the B−,R−, and I−band images obtained to support the {\it AKARI} North Ecliptic Pole Wide (NEP-Wide) survey. The NEP-Wide is an {\it AKARI} infrared imaging survey of the north ecliptic pole covering a 5.8 deg2 area over 2.5 -- 6 \micron wavelengths. The optical imaging data were obtained at the Maidanak Observatory in Uzbekistan using the Seoul National University 4k × 4k Camera on the 1.5m telescope. These images cover 4.9 deg2 where no deep optical imaging data are available. Our B−,R−, and I−band data reach the depths of ∼23.4, ∼23.1, and ∼22.3 mag (AB) at 5σ, respectively. The source catalog contains 96,460 objects in the R−band, and the astrometric accuracy is about 0.15\arcsec at 1σ in each RA and Dec direction. These photometric data will be useful for many studies including identification of optical counterparts of the infrared sources detected by {\it AKARI}, analysis of their spectral energy distributions from optical through infrared, and the selection of interesting objects to understand the obscured galaxy evolution.
@article{arxiv.1010.3517,
title = {Optical Images and Source Catalog of AKARI North Ecliptic Pole Wide Survey Field},
author = {Yiseul Jeon and Myungshin Im and Mansur Ibrahimov and Hyung Mok Lee and Induk Lee and Myung Gyoon Lee},
journal= {arXiv preprint arXiv:1010.3517},
year = {2010}
}