Published online by Cambridge University Press: 14 August 2015
Our program of meteor research has been changed since November, 1963, by introducing spectral photography at the Dodaira branch station of the Tokyo Astronomical Observatory, in addition to the direct photography at the Mitaka Station. Observations at these two stations are basic, and they have been supplemented in case of need by observations at the temporary station at Tatebayashi, situated about 40 km Northeast of Dodaira. Double- or triple-station observations were carried out mainly during the active period of the major streams, such as Quadrantids, Perseids, Leonids or Geminids, with the purpose of the dynamical and physical studies of meteors. The coordinates of these three stations are as given in Table 1.