Madras (India)

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            Madras (India)

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              Astronomical observations made at the honorable the East India Company's Observatory at Madras in the year 1843-1847 together with the recomputation of the Sun and Moon and planetary observations since 1831.

              Taylor, Thomas Glanville
              IND-IIA-F025-I02 · Item · 1868-08-18
              Part of Compilation of Pogson's observations and drawing

              This item was about total solar eclipse of 18th August 1868. At Masulipatnam Pogson detected the hydrogen line emission, with a spectroscope. He saw a bright yellow line near the position of D lines of Sodium. The line originated from hitherto unknown element later termed as helium after the source of earliest detection. Hand coloured sketch of the solar spectrum during the Total Solar Eclipse of 1868. Hand coloured picture of the sun before and after the total solar eclipse 1868.

              Pogson, Norman Robert