VizieR Online Data Catalog: Unobscured QSOs in ecliptic poles from KMTNet & PS1 (Byun+, 2023)

Aiming to provide complementary optical data for the SPHEREx mission, we observed a wide area of the south ecliptic pole (SEP) field using the Korea Microlensing Telescope Network (KMTNet) from 2019 December to 2020 February, as a part of the KMTNet Nearby Galaxy Survey (KNGS; see Byun+ 2022PASP..134i4104B). The central position of the full coverage was set to be RA(J2000)~4h44m,DE(J2000)~-53°. KMTNet consists of three 1.6m telescopes located at three different sites: Cerro-Tololo Inter-American Observatory (CTIO), South African Astronomical Observatory (SAAO), and Siding Spring Observatory (SSO).

To select QSO candidates in the NEP field, we utilized Pan-STARRS1 archival data, which surveyed the Northern Hemisphere for DEC>-30° using grizy filters. See Section 4.3.

(1 data file).