Night report 2025-02-10

Observers: James Gillanders, Dylan Magill

Support: Charlotte Angus, Shubham Srivastav, Jack Tweddle

TAT:  Sara Faris, Michel Dennefeld, Lluís Galbany

Beginning (UT 00:53): relative humidity = 75.8%, temperature = 12.9 degrees Celsius, windspeed = 0.4 m/s, seeing = 1.6”

Middle (UT 05:15): relative humidity = 69.0%, temperature = 14.9 degrees Celsius, windspeed = 1.8 m/s, seeing = 1.0”

End (UT 08:59): relative humidity = 77.2%, temperature = 12.5  degrees Celsius, windspeed = 1.0 m/s, seeing = 1.7”

Calibrations: Bias, arcs (gr#11, gr#13, gr#13+GG495, gr#16, gr#16+OG530, gr#18, gr#20).

Estimate SNID Classifications: AT2025ayu = Ia-norm, AT2025bdl = Ia-norm, AT2025ayp = Ia-norm, AT2025ais = Ia-91T.