For the Solar eclipse of August 21 , 2017 , NSO enlisted the cooperation of various groups in the Citizen CATE ( Continental-America Telescopic Eclipse ) experiment to set up more than 60 identical telescopes along the eclipse path , to produce 90 continuous minutes of images , 10 seconds apart , of the Sun 's inner corona . This was to provide a clearer understanding of solar plumes and other transient phenomena
Solar eclipse of August 21 , 2017
Solar eclipse of August 21, 2017
National Solar Observatory