Night report 2025-01-26

Observers: Simon de Wet, Hannah Wichern

Support: Giorgos Leloudas

TAT:  Michel Dennefeld, Sara Faris, Thallis de Lourenço Pessi

Beginning (UT 00:40): relative humidity = 34%, temperature = 18.2 degrees Celsius, windspeed = 4.5 m/s, seeing = 0.34”

Middle (UT 05:00): relative humidity = 24%, temperature = 17.6 degrees Celsius, windspeed = 4.0 m/s, seeing = 1.00”

End (UT 08:30): relative humidity = 33%, temperature = 17.3  degrees Celsius, windspeed = 2.5 m/s, seeing =0.42”

Calibrations: Bias, dome flats, arcs (gr#11, gr#13, gr#13+GG495, gr#16, gr#16+OG530).