Night report 2026-06-03

Night report 2025/06/03

Observers: Melzie Ghendrih (Lancaster University), Ed Charleton (University of Southampton) and CG Touchard-Paxton (Trinity College Dublin)

Support: Phil Wiseman, Peter Clark, Matt Quilt, Nikolaos Shiamtanis (University of Southampton)

TAT: Claudia Gutiérrez (IEEC), Shubham Srivastav (QUB), Michel Dennefel (IAP Paris)

Start: 01:59 UT | Humidity: 16.60% | Wind speed: 13m/s | Seeing: 1.3

End: 05:12 UT | Humidity: 18.2% | Wind speed: 9.8m/s | Seeing: 0.90

Afternoon Calibrations:

• Darks, arcs and dome flats done in the afternoon

Notes:

• 22:26 UT: Cloudy, so cannot open dome

• 01:54 UT: Opening telescope

• 02:05 UT: focusing

• 02:14 UT: starting observations with standard

• 02:44 UT: seeing degraded, switching to slit 1.5

• 03:42 UT: seeing consistently below 1.5, reverting to slit 1

• 07:39 UT: closing telescope, overcast

• 05:12UT: cal