AR-2020-21

33 rd ANNUAL REPORT 2020-21 172 An online course titled An Introduction to Optical and Infrared Interferometry, was organized by the Teaching Learning Centre of theAstronomy Centre for Educators, IUCAA, from the end of July 2020 till the end of September 2020 with Jean Surdej (Honorary Director, Extragalactic Astrophysics and Space Observatories Group, University of Liege, Belgium) as the instructor. This course was coordinated by PrakashArumugasamy (IUCAA). (For details, see Khagol, No. 124, October 2020) An Introduction to Optical and Infrared Interferometry During the time of this pandemic, efforts were also being made by the Teaching Learning Centre of the Astronomy Centre for Educators, IUCAA, to either design and later build, or do experiments with equipment and/or software, which the participants have access to or may be available at their homes. One such initiative was the design of a low- frequency antenna for radio astronomical observations as part of the Sky Watch Array Network (SWAN), which started at the Raman Research Institute, Bengaluru, by Avinash Deshpande (IUCAA). This competition titled SWANtenna – 2020, was announced in May 2020. The SWANtenna competition was being coordinated by AvinashDeshpande, and other colleagues at TLC. (For details, see Khagol, No. 124, October 2020) Antenna Design Competition: SWANtenna– 2020