Optical Positions of 22 Radio Stars Measured by Photoelectric Astrolabe Mark-1 in Irkutsk

The observation of star position for catalogue compiling had been made in Irkutsk for 5 years with the Chinese photoelectric astrolabe Mark-1 according to the agreement of scientific cooperation between CSAO and VS NIITRI.This cooperation has taken the advantage of combination of the large zenith distance (45°) of almucantar for the astrolabe Mark-1 with the high latitude(52°)for Irkutsk,which could eliminate the blind zone existing in declination measurements for all the astrolabe catalogues.Based on the cooperation,a star catalogue containing positions of 817 stars had been completed;besides,the positions of 22 radio stars had been measured precisely in both right ascension and declination,which are given in this paper.