Single-photon gig in Betelgeuse’s occultation

In the realm of astronomical exploration, cutting-edge technologies are indispensable. Single-Photon Avalanche Diode (SPAD) sensors offer unparalleled precision, enabling the detection of individual photons with remarkable timing resolution. However, the current use of single-pixel SPAD devices poses limitations on spatially-resolved imaging in astronomy. Enter two-dimensional SPAD detectors, revolutionizing observation capabilities and enabling the study of rapid cosmic phenomena.

This talk explores the transformative potential of two-dimensional SPAD detectors in observational astronomy. Focusing on recent advancements, we discuss their ability to capture rapid fluctuations in celestial events, offering insights into phenomena previously beyond reach. Leveraging these innovations, we present our results on the occultation of Betelgeuse by asteroid (319) Leona, showcasing the unprecedented temporal resolution achieved with SPAD technology.