Due to the limit that the area of grid units are nonuniform

and the selected guide stars are too nearer between partially adjacent grids

a guide star catalog construction method based on spherical triangle subdivision is proposed. The triangle grid is introduced to replace quadrillage grid to make the area of grid units approximately equal

by introducing ‘distance-magnitude’weighting

improve the problem that the selected guide stars are too nearer between partially adjacent grids. Simulation results show that the guide stars catalog constructed by this method have small memory space

better uniformity

in the case that sigmacompleteness is slightly increased

and it reflects effectiveness of this method.