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Signal-to-Noise Improvements for Observations of 2023 Betelgeuse's Occultation
JOA 2024, Vol. 14, No. 1, Page 27 Author(s): Costantino Sigismondi; Claudio Costa; Alfonso Noschese; Konrad Guhl; Mariangela BisconteAbstract: The occultation of Betelgeuse by the asteroid (319) Leona was known for decades, and it has been prepared carefully. The local organisers of AstroCampania association were ready to react in real-time to the meteo conditions and move and accommodate many observers from the Thyrrenian to the Ionian coast of Calabria, near the predicted centre line. An IOTA/ES meeting was held at lunch time on 2023 Dec 12th in Cassano all’Ionio. The uncertainty in the astrometry and in the diameter of Betelgeuse suggested to stay near the centre line, to obtain the maximum from the data. The battle against the scintillation was finally won by realising multi-hole masks for large field-telescopes. The preliminary results have been presented at the IAU meeting on 2023 Dec 16 th in memory of J. M. Pasachoff (1943-2022) who also planned special observations of this event.