TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1359 SUBJECT: GRB 020409, No Optical Detection to R = 20 DATE: 02/04/11 15:17:23 GMT FROM: Stephen Holland at U. of Notre Dame S. T. Holland (Notre Dame), J. Gorosabel (IAA, Grenada), K. Augustensen, B. L. Jensen, J. Hjorth (Copenhagen) report: We have obtained R-band images of the error box of GRB 020409 (Piro 2002, GCN 1347) using the Danish 0.5m Brorfelde Schmidt telescope. The first epoch images were taken on 2002 April 10 at 20:25 UT and had a total exposure time of 1200 seconds. The second epoch images were taken on 2002 April 10 at 22:35 and had a total exposure time of 2400 seconds. We subtracted the combined exposures from each epoch using the methods described in Schmidt et al. (1998, ApJ, 507, 46). We find no evidence that any object in the BeppoSAX error box varies by more than approximately 0.1 mag in the two hours between the centres of the two epochs. The limiting magnitude of this search is approximately R = 20. We also combined all of the images from both epochs to obtain an image with a limiting magnitude of approximately R = 21. We compared this image with the Digital Sky Survey (DSS) and found no new sources to the detection limit of the DSS. The combined images will be made available at . This message may be cited.