Determination of the Extinction Coefficient at Gaomeigu

Extinction coefficients at Gaomeigu, Lijiang have been measured in B and V bands by using the photoelectric method during Jan-Feb 1996. For the convenience Of comparison, the measurements have been also made at the Yunnan Observatory in the same Pened of time. All results are presented in this paper. Data from some observatories around the world are also presented for comparison.