TITLE: GCN CIRCULAR NUMBER: 5779 SUBJECT: GRB 061028: Optical R passband observations DATE: 06/11/02 07:06:44 GMT FROM: Alok Chandra Gupta at Nat. Astro. Obs./Yunnan Obs A. C. Gupta & J. M. Bai National Astronomical Observatories/Yunnan Observatory CAS, P.O. Box 110, Kunming, Yunnan 650011, China We observed the field of GRB 061028 detected by SWIFT trigger no. 235715 (Sakamoto et al, GCN 5762) with CCD detector at our 1.02 meter telescope of the Yunnan observatory, Kunming, China. We started our observation on Oct. 29, 2006 at UT 18:06:20. We took 6 image frames of 300 seconds exposure time of each in the optical R passband. There is no detection of optical afterglow candidate in our combined 6 images. The 5-sigma limiting magnitude of our observations is R ~ 20.0 mag.