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 total solar eclipse that occurred on 24 October 1995 at Neem Ka Thana in Rajasthan. In the collection three photographs were captured at different intervals during a solar eclipse. The first photograph shows the Sun as fully covered by the Moon, creating a half-ring. The second photograph displays the Sun's corona as a bright, heavy ring, and the third shows the Sun as a light ring.

This item was about the image of the coronal structures (visible only during eclipses), from left to right : taken with (a) green filter, 100ms exposure, 2x2 binning, (b) red filter, 300ms exposure, 4x4 binning and (c) red filter, 100ms exposure, full resolution.

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

French astronomer Gustave de Pontecoulant wrote the Analytical Theory of the World System volume 3, part I has pages from "i-xxiv, 1 - 230" and part II has pages from "231 - 566". It was published in 1834. It contains mathematical and scientific explanations of various phenomena related to celestial bodies and their movements. The book covers topics such as the orbits of planets, perturbations caused by gravitational influences, calculations of constants and coefficients, expressions for perturbing forces, and equations for determining the elements of orbits.

This item is Analytical Theory of the World System volume 2, written by French astronomer Gustave de Pontecoulant and published in 1829. It covers topics such as the movements of celestial bodies, equations of motion, and other aspects of celestial mechanics. It has 506 pages.

The title of the book " Theoric analytique du system du Monde" translates to " Analytical Theory of the World System ". There are two volumes of this book. The first volume has seven chapters, and the second volume consists of 9 chapters. This book was written by G De Pontecoulant and published in 1829.

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.