The great development of astrometric accuracy since the observations by Hipparchus about 150 BC was documented in 2008 in the first version of the present report. This report was updated in Høg (2017d), e.g. with recent information on the catalogues before 1800 AD. The development has often been displayed in diagrams showing the accuracy versus time. A new simplified diagram is provided in the present report as Fig.2 and in a .png file and this information will presumably be the main interest for some readers.
- Pub Date:
- July 2017
- Astrophysics - Instrumentation and Methods for Astrophysics;
- Physics - History and Philosophy of Physics
- 4 pages, 2 figures, update of the report from 2017 in arxiv:1707.01020v1. arXiv admin note: text overlap with arXiv:1104.4554