Night report 2025-02-09

Observers: Dylan Magill, James Gillanders

Support: Charlotte Angus, Michael Fulton

TAT:  Sara Faris, Michel Dennefeld, Lluís Galbany

Beginning (UT 00:25): relative humidity = 55.9%, temperature = 15.6 degrees Celsius, windspeed = 9.0 m/s, seeing = 1.4”

Middle (UT 05:15): relative humidity = 48.5%, temperature = 17.7 degrees Celsius, windspeed = 4.2 m/s, seeing = 1.0”

End (UT 09:05): relative humidity = 55.4%, temperature = 15.7  degrees Celsius, windspeed = 0.3 m/s, seeing = 1.5”

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

Estimate SNID Classifications: AT2025app = Ia-norm, AT2025azf = Ia-norm, AT2025bco = IIP/IIn, AT2025bbx = Ia-norm.