The item comprises observations notes of the separate results of Madras Meridian Circle Observation by N. R.Pogson in 1864 and 1875.

Results of observations of the fixed stars made with the Meridian Circle at the Government Observatory , Madras, in the year 1862, 1863 and 1864 under the Direction of Norman Robert Pogson

Results of observations of the fixed stars made with the Meridian circle at the Government Observatory, Madras in the years 1877, 1878 and 1879.

Results of observatios of the fixed stars made with the Madras meridian circle, Vol. IX - General Catalogue.Fixed stars

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 an instrument used for measuring the intensity of a light source. It uses a light-sensing device that is calibrated to express intensity in a standard unit. Some optical elements such as lens etc. are also employed to incerase the sensitivity of the instrument.

The letter was reply to D.O.No.2440 of the 8th instant, the R.A. clamp at Lahore is intended to be used with two cords and it was explained to Chowla. Further he mentioned about transit instrument and chronograph are extremly shoddy and not in accordance with specification.

Results of observations of the fixed stars made with the meridian circle at the Government observatory Madras in the years 1874, 1875 and 1876.

The fond contains Results of observations of the fixed stars made with the Meridian Circle at the Government Observatory , Madras

This fond includes instrumental corrections implemented from 1883 to 1887. Additionally, it features distinct outcomes of observations and average positions of stars during the years 1883 to 1887. Furthermore, the fond contains a distribution list of Madras astronomical publications.