Night report 2026-06-11

Night report 2025/06/11

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

Support: Nikolaos Shiamtanis, Phil Wiseman and Peter Clark (Southampton)

TAT: Amar Aryan (NCU), Francesca Onori (INAF), Sara Faris (Tel Aviv)

Beginning:  05:28UT | Humidity: 21.5% | Wind speed: 6.9m/s | Seeing: 1.0

Middle: 04:52UT | Humidity: 21.1% | Wind speed: 11.9% | Seeing: 1.4

End: 10:15UT | Humidity: 18.4% | Wind speed: 14.6m/s | Seeing: 1.5

Morning Calibrations:

• g, r, z flats done

Afternoon Calibrations:

• Darks, arcs and dome flats done in the afternoon

• U and i flats done

Notes:

• 22:46 UT: running image analysis

• 23:00 UT: focusing telescope

• 00:55 UT: refocusing telescope

• 03:50 UT: refocusing telescope

• 06:45 UT: switching the slit to 1.5 as seeing is oscillating around 1.5''

• 08:33 UT: seeing down, so switching back to slit 1

• 09:13 UT: wind up (DIMM shut) and seeing degraded again, so switching to slit 1.5