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A gamma-ray burst (GRB) optical photometric follow-up system at the XinglongObservatory of National Astronomical Observatories of China (NAOC) has beenconstructed. It uses the 0.8-m Tsinghua-NAOC Telescope (TNT) and the 1-m ESTtelescope, and can automatically respond to GRB Coordinates Network(GCN)alerts. Both telescopes slew relatively fast, being able to point to a newtarget field within about 1 min upon a request. Whenever available, the 2.16-mNAOC telescope is also used. In 2006, the system responded to 15 GRBs anddetected seven early afterglows. In 2007, six GRBs have been detected among 18follow-up observations. TNT observations of the second most distant GRB 060927(z=5.5) are shown, which started as early as 91s after the GRB trigger. Theafterglow was detected in the combined image of first 19x20s unfilteredexposures. This GRB follow-up system has joined the East-Asia GRB Follow-upObservation Network (EAFON).

A GRB Follow-up System at the Xinglong Observatory and Detection of the High-Redshift GRB 060927