Night report 2025-05-19

Night report 2025/05/19

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

TO: Duncan Castex (ESO)

Support:  Janet's group

TAT: Eduardo Concepcion (Nova Gorica), Sara Faris, Michel Dennefeld

Start: 22:43UT | Humidity: 10.0% | Wind speed: 3.6 m/s | Seeing: 0.7''

Middle: 03:42UT | Humidity: 13.0% | Wind speed: 3.8 m/s | Seeing: 0.65''

End:  10:01UT | Humidity: 13.3% | Wind speed:  7.7 m/s | Seeing: 0.6'' 

Calibrations: 

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

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

Notes

Seeing was good around .7″, so we used the 1″ slit in most observations.