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

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.

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.

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.

The letter is from the Deputy Director of the Madras Observatory to the Director of Kodaikanal and Madras Observatories regarding Madras meridian circle observations. It informs that the volumes of the mentioned observations have been forwarded to the Director of Laws Observatory, Missouri.

The letter was to inform G. S. Chowla the dislikeness of Dr.Gilbert T. Walker for the clamping arrangement made in R.A., and asking for the required arrangement to take make the clamping arrangements right.