Night report 2026-09-01

Night report 2025/09/01

Observers: Ravi Seth, Cillian O'Donnell (Trinity College Dublin)

Support: Tomás Müller Bravo, Jacco Terwel (Trinity College Dublin)

Start: 23:23UT | Humidity: 11% | Wind Speed: 0m/s | Seeing: 1.09

Middle: 04:52UT | Humidity: 14% | Wind Speed: 0m/s | Seeing: 1.09

End: 08:54UT | Humidity: 7% | Wind Speed: 0m/s | Seeing: 1.09

Afternoon Calibrations:

Darks, dome and arc flats taken in late afternoon - delayed due to work being done on the instrument in the afternoon.

Not enough time to take evening twilight flats due to those delays.

Could not take twilight flats in the morning either because of closure.

07:24UT - Clouds slow us down slightly.

Notes:

• Issues with detector which resulted in a black spot and some streaks in the image acquisitions. We tried our best to line up all objects away from the black spot and away from any major streaks on the detector.

• Ended night at 08:54UT due to high cloud coverage