Night Report 2019-03-06

Observers: Ana Sagués Carracedo, Cristina Barbarino, Valéry Brinnel

Support Team: LeonardoTartaglia, Jesper Sollerman

TAT: Michel Dennefeld, Morgan Fraser




dome flat and arcs (evening) - Evening arcs aren't valid because they were taken with the misaligned slit. Repeated in the morning.

evening sky flats: UBVRi

morning sky flats: zr

dome flat and arcs (morning)


Start: Humidity 41%, wind speed 1.7, thin low clouds, good seeing (less than 1 arcsec from the acq images).

Middle (5 ut): Humidity 42%, wind speed 3.8, seeing 0.71

End: Humidity 39%, wind speed 1.1, seeing 0.7


DIMM seeing wasn't working at the beginning of the night until around 2UT.

Instrument - EFOSC2

UT Target Type Setup airmass Seeing(DIMM) texp notes

00:19 AT2019bna class gr13 1.2 0.6 (from acq image) Failed: SN not visible in the acquisition image.

00:26 SN2018iuq follow-up gr13 1.35 0.6 (from acq image) 1800s Failed: Slit in an unusual position. No spectrum was taken. We didn't have time to repeat it, so you moved to the following transient.

01:00 TO checked the position of the slit and aligned it.

01:14 SN2018kzr follow-up gri 1.2 1.2 (from acq image) 1800s each filter At around 2UT, DIMM seeing started working giving 0.6 arcsec.

03:05 L745a std gr11+13+16,sl1+1.5 1.1 0.69

03:31 SN2018ldu follow-up gr13 1.56 0.98 2x2700s

05:13 AT2019bkc re-class gr13 1.2 0.71 600s

05:33 SN2018atq follow-up gr13 1.5 0.71 2x2700s The object is the very faint trace in pixel around 675.

07:15 SN2019asz follow-up gr11 1.1 1.1 1800s

07:50 ZTF19aaksxgp class gr13 1.12 1.1 900s type IIn

08:11 EG274 std gr11+13+16,sl1+1.5 1.1 1.3

08:32 SN2019bdz follow-up gr13 1.2 0.7 1500s

09:08 AT2019bkf class gr13 1.1 1.37 900s type Ia

09:30 AT2019bff class gr13 1.5 0.69 300s type Ia