Night report 2025-05-24

Night report 2025/05/24

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

TO: Cecilia Farias (ESO)

Support:  Janet's group

TAT: Lluís Galbany, Dragana Ilic

Start: 23:10UT | Humidity: 17.0% | Wind speed: 4.8  m/s | Seeing: 0.5'' (Thin clouds at low elevation)

Middle: 03:30UT | Humidity: 21.0% | Wind speed: 4.2 m/s | Seeing: 0.7'' (Some intermittent thin clouds, one short peak of seeing to 1.4")

End:  09:45UT | Humidity: 26.0% | Wind speed:  4.8 m/s | Seeing: 1.4'' (Thin clouds at low elevation)

Calibrations: 

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

Sky flats were taken in the evening (filters: grz). UBVRi sky flats were taken in the morning.

Notes

Seeing was good around .6″, so we used the 1″ slit in most observations.