Night report 2025-07-22

Night report 2025/07/22

Observers: Rita Santos and Gonçalo Martins

Support:  João Duarte and Santiago González-Gaitán

TAT: Timo Kravtsov, Claudia Gutiérrez, Priscila J. Pessi

Start (22:57 UT): humidity 6%, temperature 13.4º C, wind speed 1.2 m/s, seeing 0.97'', airmass 1.13

Middle (03:53 UT): humidity 3%, temperature 13.7º C, wind speed 4.2 m/s, seeing 0.51'', airmass 1.24

End (10:33 UT): humidity 6%, temperature 11.3º C, wind speed 7.1 m/s, seeing 0.70'', airmass 1.27

Calibrations: Afternoon calibrations: bias, flats, arcs in gr11,  g13,  gr16. Morning calibrations: arcs in gr11,  g13,  gr16.