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These photographic slides contain the images of the spectrometer, and Ondrej telescope related to the Optical Science Department of Royal Observatory, Edinburgh.

The photographic slides contain some images of Pogson's transit, Madras Observatory, Osmania University, Goldmigham, K D Naegamvala, Uranus painting(1977), the post-war development committee(1945), etc.

The photographic slides contain some images of records in 1794,1812, 1809.

The photographic slides contain images of Neptune's atmosphere, Winds on Jupiter, Comet, Saturn's storm, the moon and rings of Uranus, Saturn's rings, Jupiter and some observational graphs. The slides were received from Dr. Vasundhara.

This fonds contains photographic slides from a space science seminar in 1965. An image of S.S. Kumar and Zwestha, an image of Shelton Clock, and a few other images were also there.

This fond contains collection of items that provide information about solar eclipses that occurred during the time period of 1868-2006. The collection includes photographs of total solar eclipses that took place on different dates, and covered from different places as well as sketches that help to illustrate the phenomenon and the path of the eclipses.

This fond contains the life history and a brief description of the discoveries of Mr.N.R.Pogson.

This item was an instrument used for measuring the intensity of a light source. It uses a light-sensing device that is calibrated to express intensity in a standard unit. Some optical elements such as lens etc. are also employed to incerase the sensitivity of the instrument.

The album includes documents on the results of astronomical observations and photographs related to the Madras Observatory. A copy of the first observation made at the Madras Observatory and a page from Madras M. S. record is preserved with photos of the Madras Observatory, Shelton clock and granite slab with Latin inscription at Madras Observatory. A map of Madras Observatory land in 1826 and a sketch of John Goldingham swinging Kater's pendulum hung in front of Haswell clock in the observatory.

The album contains photos related to the Solar Physics Observatory at Kodaikanal during Dr Anil Kumar Das's directorship. It was established in 1899 as a Solar Physics Observatory, and all the activities of the Madras Observatory were shifted to Kodaikanal. The photographs in this album illuminate the critical events in the history of the Kodaikanal Observatory from 1946 to 1955. The visit of eminent scientists and astronomers, official meetings and conferences, celebrations, and farewells and staff of the observatory during the period can be seen in the album.