TITLE: GCN GRB OBSERVATION REPORT NUMBER: 4166 SUBJECT: GRB 051021, Optical Observations DATE: 05/10/26 14:33:54 GMT FROM: Kuntal Mishra at ARIES,Nainital,India Kuntal Misra (ARIES, Nainital) and Atish P. Kamble (Raman Research Institute, Bangalore) on behalf of a larger Indian GRB collaboration We observed the field of GRB 051021 (HETE trigger 3947) using the 104 cm reflector telescope at ARIES, Nainital. We do not find any new source upto a limiting magnitude of 21 in our combined (exposure 3*300 sec) R band images on October 22.675 UT with respect to five nearby USNO-A2.0 stars. This message may be cited.