observation rooms. On the first floor a vacuum vertical spectrograph is mounted
giving high-dispersion spectra and monochromatic solar images at the Hα line and
G-band. On the second floor a horizontal spectrograph gives the entire visible solar
spectrum.
Fig. 6.14 Sunspot spectrograms obtained with polarimeter. The two upper ones are for circular
polarization and the lower two are for linear polarization. Arrows at both sides denote the position
of penumbras. (Makita 1979)
Fig. 6.15 Domeless Solar
Telescope (DST) at Hida
Observatory of Kyoto
University. (Courtesy
Kwasan and Hida
Observatory)
154
6 Postwar Development of Astrophysics, 1946–2000 (Part I: Instrumentation)
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