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 album contains photos of the briefing of the National Large Optical Telescope teams held in IIA Bangalore campus in 1993.

The album contains photographs of a fire accident held in the room of Bharagavi on 11 April 1998. It can be seen in the photos of the burned coat and bed.

The album consists of photos of the Pooja ceremony on constructing the student's hostel "Bhasakara" in 2006. The former Director, Hasan S. S, and other delegates attended the event. The album includes photographs of the rituals, models, and plans.

The album contains photos of the IIA council meeting that occurred during the directorship of R. Cowsik. The album includes pictures of discussions and meetings with council members and team dinners.

The album contains photos taken during the visit of the IAU (International Astronomical Union) executive committee to the IIA Bangalore campus on 12 September 1992. Prof. R. Cowsik was the director of the institute at that time. A group of 17 members from different countries visited various departments of the institutes, such as the library, archives, and mechanical workshop. Along with those photographs, the album includes a presentation by Director R. Cowsik and group photos of the IAU members.

The album consists of photographs taken during the 40th General Council meeting for 1992-1993 held at the House of Lords and Windsor Manon in Bangalore. There are photos of the general council members, like R. Cowsik, M. G. K. Menon, and Venkatraman Radhakrishnan, in this album.

The album comprises photos of the Annual Day celebration for the year 1990 at IIA Bangalore. The photos of cultural programs, meetings, and group photos are preserved in the album. The chief guest of the function was Dr.M. K. Vainu Bappu, founder of the institute.

The album contains photos of the annual day celebration in 1992, held at the Bangalore campus.

The album consists of photographs of the IIA annual event held in 2007 in IIA Bangalore's main campus. Photos of programs such as games, competitions, cultural activities, and award ceremonies are organized as an album.