Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009acasn..50...76y&link_type=abstract
Acta Astronomica Sinica, vol. 50, no. 1, p.76-84
Astronomy and Astrophysics
Astronomy
Atmospheric Effects, Astrometry
Scientific paper
Because of the effect of the atmospheric refraction, it is seldom to observe objects with altitude lower than 15 degree. But for the complete theoretical research of the atmospheric refraction, it is necessary to observe such objects, even with altitude close to 0 degree. Especially in some special situation, some objects with low altitude need to be observed. A new differential method is presented to measure the atmospheric refraction. Starting with the zenith, a series of star fields at different altitude are observed by a telescope with larger field of view, the derivatives of various orders are calculated at different zenith distances, and finally the observational atmospheric refraction can be obtained by numerical integration. The method does not depend on strict local parameters and precise instruments, while the observational principle is relatively simple. An experimental observation was carried out with a simple telescope with large field of view at Xinglong station of NAOC at the end of 2007. The atmospheric refraction from the zenith distance of 44.8 degree to 87.5 degree is gotten by the differential method, which proves the feasibility of the method tentatively. Limited by the observation condition, the precision of the result is not high. The maximal accidental error is about 6 arc second, and there is also some systematic error. The difference between the observation atmospheric refraction and Pulkovo table is about 15 arc second at the zenith distance of 84 degree. How to eliminate the accumulated errors introduced by the errors of the integration model is the key problem that needs solving in the future.
Mao Yin-Dun
Qi Zhao-Xiang
Tang Zheng-Hong
Yu Yue
Zhao Ming
No associations
LandOfFree
Differential measurement method for atmospheric refraction and the results of experimental observations does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Differential measurement method for atmospheric refraction and the results of experimental observations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Differential measurement method for atmospheric refraction and the results of experimental observations will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1711051