Night report 2025-04-14

Night report 2025-04-13:

Observers: Christina Humina, Niko Pyykkinen

Support: Timo Kravtsov, Christian Vassallo, Niilo Koivisto

TAT: Jesper Sollerman, Giuliano Pignata, Tanja Petrushevska, (and Dragana Ilic)

Please note that calibs yesterday morning were cut short due to a shutter failure and no morning calibrations were successfully completed (night 04-13). 

Calibrations: evening: bias, domeflats, and spec arcs (11,13,16,18) Morning:bias, skyflats gri, specarcs, g18+20 domeflats

Due to a shutter failure at sunset calibrations of grism 20 were not completed and we started observations 1 hour and 20 minutes late. Many setting targets were missed due to this. Another shutter failure occurred at 04:14. Observations were continued at 05:46. Rest of the night went without issue.

Start 01:08 (UT): Humidity: 37% Temperature: 11.3 Wind speed: 8.2 m/s DIMM seeing: 0.7''

Middle 04:36 (UT): Humidity: 34 % Temperature: 11.5 Wind speed: 7.3 m/s DIMM seeing: 1.7''

End 09:43 (UT): Humidity: 33 % Temperature: 11.3 Wind speed: 6.3 m/s DIMM seeing: 0.9''