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

This item was a magnetic compass which was used by M.K.Vainu Bappu during the visit to Kavalur for site survey. The magnetic compass is a tool used for determining direction on the surface of the Earth. It operates by using a magnetic pointer that aligns itself with the Earth's magnetic field. This type of compass is the oldest and most commonly used in various forms of transportation such as aircraft, ships, and land vehicles. The Earth's magnetic field acts as an enormous bar magnet with a North-South field that causes freely moving magnets to take on the same orientation. Although the direction of the Earth's magnetic field is not entirely parallel to the North-South axis of the globe, it is close enough to make an uncorrected compass a reasonably good guide. The inaccuracy, known as variation (or declination), varies in magnitude from point to point on Earth.

This fond consist of newspaper clippings on the awards received by IIA scientist, commission of the new telescope at Kavalur and uneviliation of M. K. Vainu Bappu's statue.

This fond contains photographic plates of Comet Halley in 1987 viewed from Kavalur using the 90" telescope under various atmospheric conditions

This fond contains photographic plates of Comet Wilson in 1987 viewed from Kavalur using the 90" telescope under various atmospheric conditions

The photographic slide contains an image of Rajamohan Irulappan village in Kavalur.

The photographic slides contain images of the 15-inch telescope in Kavalur from 1969 to 1971.

The photographic slides contain images of the 40-inch telescope control desk, it's construction, reparing of it's dew cap from 1971 to 1984.

The photographic slides contain images of the 40-inch telescope, its parts like the plate holder, Cass coude ring, and observer guiding at Cass coude focus.

This fonds contains images of a building section, powerhouse, observatories, sliding shed, gate view in Kavalur, quarters in Kavalur, and some buildings near Kavalur village. It also has images of a roll of sheds in Kavalur.