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Some Results Obtained From International Cooperation on Photoelectric Astrolabe

Xu Jia

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Abstract

An international cooperation on the Photoelectric Astrolabe Mark I(PHA I)between Shaanxi Astronomical Observatory(CSAO)and East Siberian Research Institute for Physics Technical and Radio Engineering Measurements(VS NIIFTRI) started to make observations in Irkutsk,Russia on Nov.3,1995. The main purpose of the cooperation focuses on star catalogue and Earth rotation measurements.By the end of May,2000,three observing programs had been completed,obtaining the data of 2763 grops observed in 777 clear nights.Based on these data,an astrolabe catalogue has been compiled,which is freed of any blind zone in declination determination(which usually exists for almost all the other astrolabe catalogues).The catalogue contatins positions of 817 stars and 24 radio stars with averaging precision of±2.1ms in right ascension and ±0.029″ in declination. Some systimatic errors have been analysed.

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What this paper is about

An international cooperation on the Photoelectric Astrolabe Mark I(PHA I)between Shaanxi Astronomical Observatory(CSAO)and East Siberian Research Institute for Physics Technical and Radio Engineering Measurements(VS NIIFTRI) started to make observations in Irkutsk,Russia on Nov.3,1995. The main purpose of the cooperation focuses on star catalogue and Earth rotation measurements.By the end of May,2000,three observing programs had been completed,obtaining the data of 2763 grops observed in 777 clear nights.Based on these data,an astrolabe catalogue has been compiled,which is freed of any blind zone in declination determination(which usually exists for almost all the other astrolabe catalogues).The catalogue contatins positions of 817 stars and 24 radio stars with averaging precision of±2.1ms in right ascension and ±0.029″ in declination. Some systimatic errors have been analysed.

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Available abstract

An international cooperation on the Photoelectric Astrolabe Mark I(PHA I)between Shaanxi Astronomical Observatory(CSAO)and East Siberian Research Institute for Physics Technical and Radio Engineering Measurements(VS NIIFTRI) started to make observations in Irkutsk,Russia on Nov.3,1995. The main purpose of the cooperation focuses on star catalogue and Earth rotation measurements.By the end of May,2000,three observing programs had been completed,obtaining the data of 2763 grops observed in 777 clear nights.Based on these data,an astrolabe catalogue has been compiled,which is freed of any blind zone in declination determination(which usually exists for almost all the other astrolabe catalogues).The catalogue contatins positions of 817 stars and 24 radio stars with averaging precision of±2.1ms in right ascension and ±0.029″ in declination. Some systimatic errors have been analysed.

Key concepts: Astrolabe, Declination, Right ascension, Observatory, Astrometry, Earth's rotation, Stars, Geodesy

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