Night report 2026-05-15

Night report 2026/05/15

Observers: Jasvinderjit Khaulsay, Jonathan Quirola

Support:  NCU+Callum Aster

TAT: Michel Dennefel, Giuliano Pignata, Nada Ihanec (Melzie Ghendrih)

Start ( 23:18 hour UT): humidity 22.7%, seeing 0.6", wind  6.3 m/s. 

Middle ( 03:01 hour UT): humidity 17.9 %, seeing 0.6 ", wind  5.1 m/s.

End ( 08:14 hour UT):  humidity 20.6 %, seeing 0.8 ", wind 8.4  m/s.

Calibrations: (calib, calib_arcs, bias, calib_gr18+gr20, UBVRi flats taken 15/5/26 at around 3:30pm)                 

Notes: Sky flats taken at sunset of 14/5/26 have clouds in them so they are not good quality. Grism 18 has an alignment issue, so we will not observe any requests for Gr18 until the fault has been fixed. There were clouds towards the mid-to-end of the night so the dome was shut for a few hours.