Measuring Photon Rings with the ngEHT Measuring Photon Rings with the ngEHTDOI: info:10.3390/galaxies10060111v. 10111Tiede, Paul, Johnson, Michael D., Pesce, Dominic W., Palumbo, Daniel C. M., Chang, Dominic O., and Galison, Peter. 2022. "Measuring Photon Rings with the ngEHT." Galaxies, 10 111. https://doi.org/10.3390/galaxies10060111.More...ID: 171546Type: articleKeywords: sao