TITLE: GCN CIRCULAR NUMBER: 5742 SUBJECT: GRB 061019: Super-LOTIS upper limit DATE: 06/10/20 23:50:19 GMT FROM: Adria C. Updike at Clemson U A. C. Updike (Clemson), P. A. Milne (Steward Observatory), G. G. Williams (MMTO), D. H. Hartmann (Clemson), and K. V. Garimella (Clemson) on behalf of the Super-LOTIS Collaboration, report: The robotic 0.6-m Super-LOTIS telescope began observing the error box of GRB 061019 (Swift Trigger 234516, Guidorzi et al. GCN 5728) at 04:19:06 UT, 3 hours and 4 minutes after the trigger. Our initial observations were 14x60 exposures in the R band. The observations began at a high airmass of 1.73. We do not detect any new source within the XRT error box in our earliest exposure or in the sum of the R band images to the following 3-sigma limiting magnitudes determined from nearby USNO-A2.0 stars: t_start (UT) exp (s) Limit ------------------------------------------------- 07:23:00 14x60 R > 21.2 The source was not detected in subsequent R,V and I band images of similar total exposure.