GCN Circular 23788
D. Xu, Z.P. Zhu (NAOC) report on behalf of a larger collaboration We observed the field of GRB 190123A (D'Ai et al., GCN Circ. 23769) with the robotic NEXT-0.6m telescope located at Nanshan, Xinjiang, China. We obtained 3x40s, 4x60s, 3x90s R-band frames, starting at 12:20:56 UT on 2019-01-23, i.e., 103 sec after the BAT trigger. No optical afterglow consistent with the XRT position (Beardmore et al. GCN Circ. 23771) is detected in the stacked image, download a limiting magnitude of R~19.5, calibrated with the USNO-B1 catalog.