This is the reprinted edition of the “Transit of Venus” original pamphlet published in 1874 by C.Ragoonath Chary. IIA library has redesigned the cover page and added the foreword by Prof.S.S.Hasan, Director, Indian Institute of Astrophysics, Bangalore and brought out the pamphlet before the world wide event of Transit of Venus on 6th June 2012 and published under IIA Archives Publication Series.

This item was the photostate copy of the original pamphlet of "Transit of Venus" by C.Ragoonatha Chary published in English languages in 1874.

The item is a 6 inch transit circle. The transit circle is an instrument used to determine the declination of stellar onjects. It consists of a circular scale kept perpendicular to the rotating axis of a telescope tube.

This item was about the total solar eclipse that occurred on 11 June 1983 in Indonesia. In photos of the event, the Sun appears to be entirely covered by the shadow of the Moon, with only the Sun' corona visible as a bright golden ring.

This item was about the photograph of Thomas Royds. Thomas Royds (1923-1937) succeeded John Evershed as the Kodaikanal Observatory Director in 1923 and retired in 1937.

This letter informing estimate about the provision for wooden floors to the bedrooms also and for tiling the roofo the outhouses to the quarters

This item was an instrument used in surveying land, alignment, testing, and calibrating optical Instruments. It is basically a refracting telescope. Whose optical elements tilt angles with high accuracy of the order of arcsecs.

This item was a stellar object requires two coordinates to locate it on the sky, as the sky is a two-dimensional plane. One of these coordinates known as declination. This is similar to the two co-ordinates viz. latitude and longitude, defining a point on the surface of the earth. The transit circle is an instrument used to determine the declination of stellar onjects. It consists of a circular scale kept perpendicular to the rotating axis of a telescope tube.

This item was about the total solar eclipse that occurred on 7 March, 1970. The resulting photograph shows the Sun completely covered by the Moon, with only the corona visible and, which was captured by the camera.

This item was about the Satyendranath Bose Medal of the Indian National Science Academy for the year 1983 awarded to M.K. Vainu Bappu. The Satyendranath Bose medal is awarded every three years to a distinguished scientist in the field of physical sciences.