The title "Les Observatoires Astronomiques" can be translated to Astronomical Observatories. This book consists of astronomical observations from the Royal Observatory of Belgium. It is written by P.Stroobant, E .Delporte, J. Delvosal and F. Moreau, and H. L. Vanderlinden. It is published in 1836

This item was about the photograph of granite pillar in meteorology department compound at Nungampakkam, Chennai as seen today. In the compound of the Meteorology Department in Chennai, there is a 15-foot tall granite pillar weighing 10 tons. This granite pillar is part of the Regional Meteorological Centre in Chennai and is preserved as a monument. This is the place where Madras Observatory was existed.

This item was about the map of part of the environs of Madras showing the relative positions of the Observatory house station and the guns. This map was made by J.Goldingham who was F.R.S. in Madras Observatory and the map was published in Madras Observatory papers in 1826 on page no. 177.

These photographic slides contains different images of Mcdonald observatory.

These photographic slides contain compressed pictures of the set-up of the astronomical instruments like Hydrometer, wind instrument, etc. at the top of Mt. Nimmu.

These photographic slides contain photos of Magnetic Observatory of Kodaikanal, Magnetic recorder room, Magnetic variometer

These photographic slides contain photos of the Kodaikanal solar observatory, North and South domes, solar tower and tunnel, changing of dome and old 15'' dome.

These photographic slides contain photos of North and South domes of Kodaikanal Solar Observatory and buildings

These photographic plates contain compressed photographs of IIA buildings and astronomical instruments

These Photographic slides contain the observations of the survey from the Mt. Nimmu base.