TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1659 SUBJECT: GRB 021023: Infrared Imaging DATE: 02/10/28 05:19:49 GMT FROM: Josh Bloom at CIT GRB 021023: Infrared Imaging J. S. Bloom and E. Falco (Harvard-Smithsonian Center for Astrophysics) report: "In analysis further to GCN #1657 (Bloom and Falco), we report that no new sources were detected as compared to 2MASS in the entire IPN error box given in GCN #1653 (Hurley et al.). The limiting magnitudes for any new sources in the error box at t_burst + 2.4 days are approximately J= 16.0 mag and K= 15.6 mag." Stacked J and K data from 2MASS and STELIRCam are available at: http://www-cfa.harvard.edu/~jbloom/GRB021023 This message may be cited.