The Observations conducted at Kavalur during the 10 March 1977 Uranus occultation of SAO158687 revealed, apart from the occultation by a satellite system known as the e ring, a decrease in the star's brightness near the moment when the planet's atmosphere could have triggered the occurrence. Since then, a theoretical explanation for the genesis of the a, ß, ?, and d rings has been put out in addition to the identities of these rings becoming firmly established. After thoroughly analysing the Kavalur photoelectric record, they provide several novel elements of Uranus' satellite ring system.

Astronomer William Stephen Jacob of India made important advances in the study of Saturn. He made observations of the Sunnian system and reported his findings, which included determining the elements of Saturn's satellites and Jupiter's adjusted mass. In 1852, he and William Lassell observed the transparency of Saturn's "dusky ring" almost simultaneously. In 1861, James Breen truncated Jacob's planetary observations. The Indian government paid for the printing of his books on the Saturnian system. Important new information about Saturn and its moons was made possible by these observations and calculations. One of his best-known pieces is a sketch he made on November 15, 1852, of Saturn. Using the Madras Equatorial, this drawing was created. W. Forrest then etched it. The illustration caught the appearance of Saturn on that specific date, providing valuable insights into the planet's features and characteristics at that time.

This item was about the Padma Bhushan Award honoured to M.K.Vainu Bappu on 28-03-1981. The Padma Bhushan is the third-highest civilian award in India. It is awarded for "distinguished service of a high order". The award was established on January 2, 1954.

The item is the original tracing during occultation of SAO 158687 by Uranus on 10th March 1977

This item was donated by Cherry Armstrong Great-Great Grand daughter of N.R.Pogson in 2006. We can see that Mr. Pogson was standing with Lucy Sylvia, An unknown Indian and Louise Camilla. Some small children were also seen in the photo seated infront, who probably be Charles Albion, Isis, and Robert Owen.

The award letter was regarding the order of the Indian Empire Certificate by George the Fifth of the United Kingdom of Great Britain and Ireland to John Evershed, Director of the Kodaikanal Observatory, Madras. Evershed was nominated and appointed to be the Ordinary Companion of the said Most Eminent Order of the Indian Empire.

The order is from the Government of Madras to the chairman, the Municipal Council, Kodaikanal, approving the proposal to extend its limits to the observatory buildings and as for the objection from the Director regarding the water supply, the area will be exempted from paying the water tax proviso(b) to section 84 of the Madras District Municipalities Act, 1920.

The Book On the discovery of The Periodic Law and on relations among the atomic weights written by John Alexander Reina Newlands was published in 1884. It has 70 pages.

The book was second edition of 'On the connexion of the physical sciences' written by Mary Somerville published in the year 1835. The book contains 494 (i-xvi) pages. The book describes about astronomy, physics, chemistry, geography, meteorology and electromagnetism as they were scientifically understood at the time.

This fond contains letters, several photographs, and observations related to A. A Narayana Ayer during the year 1913-1920.