TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2875 SUBJECT: GRB041218: Continued P60 Optical Observations DATE: 04/12/19 09:32:31 GMT FROM: S. Bradley Cenko at Caltech S. Bradley Cenko reports on behalf of the Caltech-NRAO-Carnegie GRB Collaboration: "We have continued to image the afterglow candidate of the Integral GRB041218 (GCNs 2858, 2860, 2861) with the robotic Palomar 60-inch telescope. We have obtained 9 x 180-second images in Johnson B and V, Kron R and I, and Gunn z filters. Extremely poor weather conditions (2 - 4 arcsecond seeing) have greatly limited our sensitivity. We were unable to detect the afterglow in any of our observed bands. The mean observing time and limiting magnitudes of our observations are outlined below: Filter UT (Dec. 19) Limiting Magnitude ---------------------------------------------------------------------- B 04:47 20.5 V 05:01 20.3 R 05:17 20.1 I 05:38 19.7 z 05:53 19.4 No further observations at the Palomar 60-inch are planned."