Night report 2022-02-20

Observers:Tom Killestein, Aysha Aamer, Michael Fulton, David O'Neill

Support: Joe Lyman, Xinyue Sheng, Matt Nicholl

TAT: Shubham Srivastav, Thallis de Lourenço Pessi, Tom Reynolds

EFOSC2 Calibration

Evening: bias+calib, spectroscope arcs

Morning: UBVRi sky flats

Start: 00:47 UT, humidity 58%, wind speed 3.3 m/s, seeing 1.14 (DIMM)”

Middle: 05:00 UT, humidity 56%, wind speed 4.2 m/s, seeing 1.5±0.5 (DIMM)”

End: 09:00 UT, humidity 55%, wind speed 8.5 m/s, seeing 141 (DIMM)

Beginning of night at 00:45 UT

End of night at 09:00 UT