Showing 18 results

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 a optical instrument named as Stereoscope. Stereoscopes are apparently those optical devices that help to view the two images separately and with relaxed eyes. There are two types of stereoscopes as: lens or pocket stereoscopes and mirror stereoscopes. Lens or pocket stereoscopes are great for viewing the whole overlap area of prints up to 9 cm × 13 cm or parts of larger patterns. On the other hand, mirror stereoscopes were designed to accept standard 23 cm × 23 cm metric air photos and work well with A4/US letter-sized prints. Most models come with magnifying options up to eight times, which is pretty impressive. One cool thing about mirror stereoscopes is that they are large enough to allow the analyst to draw beneath them, so it is possible to trace objects identified in the stereoview with a pen onto one of the images or a transparent overlay. However, it's important to remember that this sketch wouldn't have the geometric properties of a map as it contains all distortions present in the base image.

This fonds contains photographic slides from a space science seminar in 1965. An image of S.S. Kumar and Zwestha, an image of Shelton Clock, and a few other images were also there.

This item was about the page from M.S. Records stating that the Madras Observatory was established in 1786. The Madras Observatory was first was established in 1786.

The fond contains observations of the meridian circle reductions ( refers to the process of correcting the observed zenith distances measured by a meridian circle instrument ) taken from the Madras Observatory from the year 1862 to 1887. Meridian circle reductions refers to a process in astronomy and celestial navigation that involves observations made with a meridian circle instrument.

The fond contains observations of the meridian circle reductions ( refers to the process of correcting the observed zenith distances measured by a meridian circle instrument ) taken from the Madras Observatory from the year 1862 to 1887. Meridian circle reductions refers to a process in astronomy and celestial navigation that involves observations made with a meridian circle instrument.

This fond contains the annual report for the year 1792. It includes the observatory's brief genesis, figures and the observations taken during the same period.

The book contains the proceedings of Madras Observatory and different government orders from the year 1857 to 1898. It is xerox copy of original books.

The fond contains observations notes on Madras meridian observations recorded during 1874-1904 from Madrsa Observatory. The observations concern minor planets, stars, equations for the stars i, j, and c, corrections to observed magnetic declination, the Moon and planets, R. Andromeda, Asia, minor planets, and apparent polar distance of stars.

Madras and Kodaikanal Reports for the years 1898-1921, except 1899-1900 annual report.