5 citations · 5 across the 1 of their papers we have counts for
2 papers
astro-ph2003★ 5 cited
Magnitude systems in old star catalogues
Tomoko Fujiwara, Hitoshi Yamaoka
The current system of stellar magnitudes first introduced by Hipparchus was strictly defined by Norman Robert Pogson in 1856. He based his system on Ptolemy's star catalogue `Almag…
astro-ph2003
Survey of long-term variability of stars I. Reliability of magnitudes in old star catalogues
Tomoko Fujiwara, Hitoshi Yamaoka, Shigeru J. Miyoshi
The comparison of visual magnitudes of stars compiled in old catalogues is expected to yield information about their long-term magnitude variations. In seven old catalogues whose h…