The cassette contains a lecture on MARS delivered by Prof. C. Sivaram

This item concerns about the rare white light flare recorded in hydrogen alpha at Kodaikanal Observatory. These observations were taken on photographic films or plates and digitized for scientific research purposes.

This letter was about the list of photographs of Sun taken on different dates and at particular times mentioned.

The fond contain compilition of Newspaper clipping, photographs and graphs of Uranus ring observed at Kavalur observatory

The fond contain correspondance of M. K. Vainu Bappu with C. V. Raman and mentors, donated by Mrs. Yemuna Bappu to IIA archives.

This item was about the discovery of 5 Asteroids (or minor planets as they were known at that time) Asia, Sappho, Sylvia, Camilla and Vera at Madras. The first was named asteroid 'Asia' as it was the first to be discovered by an observer on this continent. This page from Pogson's log book shows the first observations of Asia made on April 18th and 19th 1861.

Earth, Moon and Planets was a book written by Fred Lawrence Whipple and originally published in 1947. It has 302 pages. The book covers various aspects of the Earth, Moon, and planets within our solar system, like the physical characteristics of these bodies, their orbits, geological features, atmospheric properties, and the processes that shaped them.

The item was about the original glass plate that recorded the "Evershed Effect" in 1909.

This item was about the high resolution line sketch spectra captured by John evershed during his experiment at Kodaikanal Observatory. While experimenting, he came across to capturing the high resolution spectra of Altair, Nova Aquila, Arcturus in the observatory. In this sketch, he pictured the resolution spectra that he observed as Umbra for high resolution and Penumbra for low resolution.

This item was about the Sunspot spectra taken by John Evershed, where he discovered that there is a radial outflow of gases in a sunspot. This effect is now known as the "Evershed Effect".