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          Astrophysics

            1069 Archival description results for Astrophysics

            13 results directly related Exclude narrower terms

            This item was about John Evershed (1911-1923) who joined Kodaikanal Observatory in 1907 as the Assistant Director and became the Director in 1911. In 1909, Evershed discovered that there is radial outflow of gases in a sunspot. This effect is now Known as the "Evershed Effect". For this seminal work, he was elected to the Royal Society in 1915 and was awarded the Gold Medal of the Royal Astronomical Society in 1916.

            Evershed, John
            IND-IIA-F022 · Fond · 1822

            This item was about the Goldingham working with a Kater's Pendulum hung in front of a haswell clock in the Observatory. The second assistant Thiruvenkatachary, is reading the clock, while the first assistant Srinivasachary, sitting near the 18 ft granite pier, is noting down the reading.

            Madras Observatory
            IND-IIA-F021 · Fond · 1826

            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.

            Madras Observatory
            Photograph of Pogson
            IND-IIA-F025-I01 · Item · 1861-1891
            Part of Compilation of Pogson's observations and drawing

            This item was about the Norman Robert Pogson in 1861. N.R. Pogson was appointed the government astronomer at Madras, India. When he arrived he had to work under harsh conditions. He found the instruments in a bad shape and there were no proper staff to assist him. In spite of all these he began a series of observations which terminated with his death 30 year later. He as credited with 50,000 observations most of which were published by Michie Smith after Pogsons death. During his stay in Madras he discoverd several minor planets and detected large number of variable stars. He named his daughters after the minor planets he discovered. He was also well known for his work in comets and solar eclipses.

            Pogson, Norman Robert
            IND-IIA-F019 · Fond · 1786

            This fond was about pendulum clock used at the Madras Observatory manufactured sometimes in 1786. The clock is now in Kodaikanal Solar Observatory and still in working condition.

            Petrie, William
            IND-IIA-F325 · Fond · 1986

            This fond contains photographic plates of Halley's comet in 1986 viewed from Kodaikanal under various atmospheric conditions

            Indian Institute of Astrophysics