Night report 2025-05-30

Night report 2025/05/30

Observers: Stefano Pio Cosentino (University of Catania), Callum Francis Aster (Cardiff University)

TO: Carlos La Fuente (ESO) 

Support:  Janet's group

TAT: Tanja Petrushevska, Andrea Reguitti, Lluís Galbany 

Start: 23:04UT | Humidity: 14.0% | Wind speed: 3.4  m/s | Seeing: 0.5 (Some thin clouds below 20°)

Middle: 04:00UT | Humidity: 14.0% | Wind speed: 7 m/s | Seeing: 0.5'' (Clouds after 04:25, Dome Closed) 

End:  08:58UT | Humidity: 7.9% | Wind speed:  6.2 m/s | Seeing: - (Clouds, Dome "definitely" closed) 

Calibrations: 

Dark, arc-lamps and dome flats were taken in the afternoon.

Sky flats were taken in the evening (filters: gr).

Notes

We started the night slightly late due to a telescope fault, which meant we lost time for calibration frames but with good seeing. 

However, around the halfway point we had cloud cover and the dome needed to be closed. And further telescope issues.