Astronomical observations made at the honorable The East India Company's Observatory at Madras under the superintendence of John Goldingham, Vol. III

Astronomical observations made at the honorable the East India Company's Observatory at Madras under the superintendence of John Goldingham, Vol. IV

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.

The fond contains 3 books of Astronomical observations made at the honorable the East India Company's Observatory at Madras

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.

This letter discuss about equation of a hyperbola and their work.

This letter was about three volumes of Transit Observations and Mural Circle Observations that had been stored some time at the Indian store depot have recently been presented to the Royal Astronomical Society

This is a Letter from R. K. Rangachan to R. L. Jones regarding the lunar eclipse. It is a query asking if there was a lunar eclipse visible in India on May 7, 1715. It also says that A.D.Maestro Servel and Dikshit stated in their Hindu calendar that there was a total eclipse of the sun on April 22 previously.

The letter discusses on comparison on graphs that gives the difference between the shift of line at the various points, and the shift at the centre to be compared with his formula. At the backside of this letter S. M. Sulaiman's handwritten explained the formula.

The letter was a appreciation for John Evershed discovery of spectral shift of light from the edge of the solar disc is really double of Einsteins's value. He mentioned about failure of Einstein's relativity. Further he provided 6 points on Newtonian principles, equation for the motion of a light, spectral shift of light.