34th Annual Report (2021-22)

83 propagation using a mobile phone, and a laptop as a transmitter and receiver. These experiments designed by Jameer Manur, Ashish Mhaske, and Prakash Arumugasamy (all from the Teaching Learning Centre, Astronomy Centre for Educators, IUCAA), involved exploring the inverse-square law, and the effect of putting a reflector. The set up and results from different groups are shown in the accompanying figures. The participants made several short and informative pedagogical videos, and found the Stellarium assignments given by Prakash Arumugasamy valuable, for using this package in their regular classroom teaching. Also, there were Optical Telescope Primer sessions during May 18 – 19, 2021, which covered the basics of optics and telescopes as well as step-by-step demonstration on how to set-up different types of telescopes, and how one can attach cameras, accessories, and mobile phones to them, in order to capture images. Projects were presented by Samir Dhurde (IUCAA) that the participants could try on their own, and carry out meaningful observations and measurements. Atharva Pathak (IUCAA) demonstrated the setup of the telescope and its accessories, as well as explained the working of various types of telescopes and instruments. The Refresher Course was coordinated by Dipanjan Mukherjee, Nishant Singh, and Surhud More, with Dhruba J. Saikia (IUCAA) and the team at ACE TLC overseeing the evaluations of the participants' understanding of the coursematerial. Poster announcing Guru Dhwani Guru Dhwani 2021, a national level antenna design challenge competition has been organized by Astro Club, Fergusson College (Autonomous), Pune, in collaboration with the Teaching Learning Centre (TLC) of IUCAA. The aim of this competition is to design and simulate an antenna system sensitive to the very low-frequency radio emission from Jupiter. A total of 58 teams consisting of 416 faculty members and students from about 20 states in the country have registered to participate in the competition. The final designs are to be submitted by January 16, 2022. It has been planned that the working designs will be installed in the different participating educational institutions to observe both Jupiter and the Sun. Guru Dhwani 2021: Probing the Signals from Jupiter Distribution of participants