Night report 2025-04-03

Night report 2025/04/03

Observers: Chris Duffy, Melzie Ghendrih (Lancaster University)

Support:  Andrew Milligan, Sam Shilling, Mathew Smith (Lancaster University)

TAT: Lluís Galbany (ICE-CSIC), Amit Kumar (University of Warwick), Priscila J. Pessi (Stockholm University)

Start: 02:45 UT | Humidity: 17.7 % | Wind speed: 0.8 m/s | Seeing: 1.05

End: 09:30 UT | Humidity: 10.9 % | Wind speed: 5.9 m/s | Seeing: 1.00

Afternoon Calibrations:

Problems with instrument, consequently will start calibrations late (slit alignment + shutter)

1. Bias (done in the morning of 03/04)

Broken shutter, repaired at about 02:30 UT:

2. Arcs and dome flats sequence executed after completion of final standard at 09:30UT (aborted due to problem in the M3 unit)