Determination of the Atmospheric Transparency at Gaomeigu in Lijiang County, Yunnan

During January of 1996 to March of 1998, a series of atmospheric extinction coefficient measurements were made on the B and V bands at Gaomeigu in Lijiang County, Yunnan Province using the photoelectric method.In order to obtain some comparison, same measurements w ere made on Phoenix Mountain of Yunnan Observatory in January of 1996.Results of these observations are reported in this paper.In addition, some data from other astronomical observatories and stations around the world are also shown as references.