Night report 2025-08-11

Night report 2025/08/11

Observers: Joyce Naomi Dominique van Dalen  and  Daniele Bjørn Malesani.

Support:  Antonio Martin-Carrillo, Gregory Corcoran, Laura Cotter, Morgan Fraser.

TAT: Giuliano Pignata, Amar Aryan, Michel Dennefeld.

Start (22:59 UT): humidity 11.0%, temperature 15.5 ºC, wind speed 2.8 m/s, seeing 1.0'', airmass 1.23.

Middle (04:06 UT): humidity 11.0%, temperature 15.9 ºC, wind speed 4.6 m/s, seeing 0.7'', airmass 1.36.

End (10:00 UT): humidity 10%, temperature 16.5 ºC, wind speed 3.7 m/s, seeing N/A', airmass N/A.

Comments: seeing was relatively stable. We had some (thin) clouds during the middle of the night which affected some observations and finally clouds half an hour before twilight.

Calibrations: Bias and arcs were taken and UVBRi skty flats were taken in the evening. Morning twiling standard star could not be taken because of clouds. Bias and arcs requested for the morning.