The photographic slides contain images of the Kavalur building construction, the 40-inch telescope and its nearby places.

The photographic slides contain images of the 40-inch telescope, its parts like the plate holder, Cass coude ring, and observer guiding at Cass coude focus.

The photographic slides contain images of the 40-inch telescope control desk, it's construction, reparing of it's dew cap from 1971 to 1984.