This item is about the importance of the optical telescope and the location chosen for the observatories, such as Kodaikanal and Kavalur. The item also speaks of the importance of these weather conditions for astronomical observations.

This is Reply letter to the Director General of Observatories from John Evershed stating the instrumental co

The album includes photographs captured during the installation of the H-alpha telescope at Kodaikanal Observatory in 2014 by an expert team from China. The H-Alpha telescope has a 20 cm doublet objective lens that produces a beam at f/7.9. The telescope creates a full-disk image of the sun using extra optics. The telescope can also be used to magnify a portion of the sun's disc. The album includes all stages of the installation process with the caption and instruments associated with the telescope. Photos of the IIA team with the team who came from China and cultural programme photos are also archived in this album. It was installed during the directorship of P. Sreekumar.

In this notice, Walker mentioned that Prism customs refuses drawbacks unless the contents are opened for identification wire instructions.

This item was about the report that discuss the delay in installing the world's largest telescope at an altitude of 4517 m above sea level. According to the IIA faculty, the company responsible for setting up the telescope,which has lacked the necessary competence to do so at such a high altitude.

This item was about the unused telescopes. It was unfortunate to hear that the telescopes that allowed scientists to photograph the Sun was now lying unused and gathering dust in a mechanical workshop at IIA, along with two other instruments that have met the same fate. According to a senior scientist at the institute, these instruments were dumped in the workshop and only brought out and exhibited during visits by VVIPs.

This fond is related to prisms from Kodaikanal Observatory

This letter was written to the Director, regretting that they cannot undertake to open the box at their risk, and also they are forwarding the case without opening it and are unable to get a drawback of 7/8 of the duty under the circumstances.

This is a letter to the Chief Secretary to the soul of Madras to bring a notice about construction of astronomical telescopes entirely by indigenous labour

Letter to Shackleton to reorder a meniscus lens