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Differential measurement of atmospheric refraction using a telescope with double fields of view
DOI: 10.1088/1674-4527/15/10/011 Bibcode: 2015RAA....15.1742Y

Zhao, Ming; Yu, Yong; Cao, Jian-Jun +2 more

For the sake of advancing theoretical research about atmospheric refraction, the atmospheric refraction observed at lower angles of elevation is still worth analyzing and exploring. In some engineering applications, objects with a larger zenith distance must sometimes be observed. Carrying out observational research on atmospheric refraction at lo…

2015 Research in Astronomy and Astrophysics
Hipparcos 5
The local contribution to the microwave background radiation
DOI: 10.1088/1674-4527/15/4/001 Bibcode: 2015RAA....15..461P

Pecker, Jean-Claude; Narlikar, Jayant V.; Ochsenbein, Francois +1 more

The observed microwave background radiation (MBR) is commonly interpreted as the relic of an early hot universe, and its observed features (spectrum and anisotropy) are explained in terms of properties of the early universe. Here we describe a complementary, even possibly alternative, interpretation of MBR, first proposed in the early 20th

2015 Research in Astronomy and Astrophysics
Hipparcos 2