SURFACE FIGURE OF 14M RADIO TELESCOPE MEASURED BY THEODOLITE
In order to reduce the small scale fluctuation resulting from shearing holograpy(Park et. al. 1997), differential panel adjustments were performed for 14 m radio telescope of Taeduk Radio Astronomy Observatory with T2 theodolite It appears that this method improves the surface accuracy by about 50μm 50μm . The measured surface accuracy is, at best, 170μm 170μm . The beam efficiency at 86.2 GHz is estimated to be 44% We also found that the elevation at which Park et. al. performed holography was too low.