Airy’s Prismatic Spectrum-Apparatus (1862)
Spectroscope by Browning (1874)
Christie’s direct-vision ‘half-prism’ spectroscope (1877)
Maclean star-spectroscope (1891/2)
Thompson photographic spectroscope (1897/8)
2 Yapp spectroscopes (1930s)
The Greenwich spectrohelioscope (borrowed from the Mount Wilson Observatory, 1929)
The Newbegin spectrohelioscope (donated to the Observatory in 1946)
3½- prism Littrow spectrograph
© 2014 – 2024 Graham Dolan
Except where indicated, all text and images are the copyright of Graham Dolan