Initial On-Sky Performance Testing of the Single-Photon Imager for Nanosecond Astrophysics (SPINA) System. - Albert Wai Kit Lau; Nurzhan Shaimoldin; Zhanat Maksut; Yan Yan Chan; Mehdi Shafiee; Bruce Grossan; George F. Smoot (IEEE Trans. Instrum. Meas., 2023)