Night report 2025-09-20

Night report 2025/09/20

Observers: Anwesha Sahu, Ben Warwick (University of Warwick)

Support:  Miika Pursiainen, Ben Godson, Mark Magee, Joe Lyman, Tom Killestein

TAT: Jesper Sollerman, Xinyue Sheng, Lluís Galbany

Start ( 02:50 UT): humidity 40 %, seeing 2.1", wind  10 m/s. 

Middle ( 04:15 UT): humidity 28%, seeing 1.7", wind  9.6m/s.

End ( 09:15 UT): humidity 14%, seeing 1.8", wind  7.1m/s. 

Calibrations: Bias, arcs, taken in the evening/morning.