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".

This item was about the image of the M.K.Vainu Bappu wandering in the garden.

This item was about the description of minor planet named as 87 Sylvia. This was discovered on 16th May 1866 by N.R.Pogson. The comparison stars employed have all been observed with the Meridian Circle of the Madras Observatory.

This item was about the photo of N.R. Pogson and his first wife, Elizabeth Jane Pogson. It is a black and white picture in which both stood near a table. Mr.Pogson was well dressed, and Mrs. Pogson wore a white gown with a coloured scarf.

This item was about the photograph of painting of Madras Observatory in 1792. It is considered as a postcard.

This fond contains official letters, photographs, and administrative files related to P. R. Chidambara Ayer during the years 1919-1932.

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

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.

This item was about the sketch of the path of a total solar eclipse that occurred in India in 1868. It depicts the Peninsula of India and shows the track of the Moon's shadow during the eclipse on August 17, 1868. The sketch was created by V.T. & A.K. Johnston in Edinburgh and includes scalar measurements at the bottom.

The item is a group photo of Dr. Anil Kumar Das, Prof. K. R. Ramanathan, and other employees of the Kodaikanal Observatory with astronomer Royal from Kodaikanal Observatory in 1947. K. R. Ramanathan was an Indian physicist and meteorologist. He was the first Director of the Physical Research Laboratory, Ahmedabad.