Application of Electronic Theodolite(T3000/T2000s) to Astronomical Surveying

Theories of surveying an angle with electronic theodolite(T3000/T2000s) are introduced.Its communication with the computer and the delay time of surveying an angle with electronic theodolite are researched into. The characteristics and stability of the delay time in electronic theodolite's angular measurements are analysed. Utilization of electronic theodolite in the observation of astronomical longitude and altitude are put forward. Grade 1 observation of geodetic astronomy by using high precise electronic theodolite is realized.