Night Report 2017-01-26

Observers: Jesper Sollerman, Francesco Taddia

TAT on duty: Michel Dennefeld, Nancy Elias-Rosa

Support team: Cristina Barbarino, Anders Nyholm, Emir Karamehmetoglu

Daytime calibrations:

SOFI: PESSTO_sofi_FlatJHK (in the evening)

EFOSC: PESSTO_bias, PESSTO_calib (only arcs) (in the morning)

seeing: at 1.1" at 05:07

bad seeing at 06:43, we change to slit 1.5".

Weather: clouds at the beginning of the night, and telescope closed, with humidity >70%.

01:07 80% humidity, still close.

02:13 still closed, we decided to skip the rest of the planned SOFI observations and switch to EFOSC.

The initial plan was to start to SOFI and finish with EFOSC.

03:04 telescope finally opens, image analysis

UT/Target/RA/DEC/time spent(min)/slit/grism or filter /description

EFOSC:

03:15 AT2017jt 05:00:06.76 -13:08:31.5 52 1 gr13 CLASSIFICATION. Blue continuum and host emission lines, no clear SN signature.

04:08 L745a 07:40:19.60 -17:24:42.0 16 1 gr11+gr16+gr13 Spectral standard.

04:23 AT2016jbu 07:36:25.96 -69:32:55.2 30 1 gr11+gr16 FOLLOW-UP. Very bright, strong spectral signal.

04:59 AT2017mw 09:57:20.97 -41:35:20.9 22 1 gr13 CLASSIFICATION. SN II, (possibly IIb looking at SNID), at z=0.0115 (host galaxy lines), a few days before or around max.

05:21 SN2016aiy 13:08:25.39 -41:58:50.3 60+15 BgVri FOLLOW-UP.

06:34 AT2017lv 11:44:26.53 -28:27:27.2 27 1 gr13 CLASSIFICATION. SN Ia, z=0.03, around peak.

07:02 AT2017nf 11:10:52.78 +28:16:27.1 27 1.5 gr13 CLASSIFICATION. Observed under bad seeing, the spectrum reveals it could be a SN Ic or a SN Ia a few weeks old, z=0.03667.

07:30 AT2017me 11:27:54.52 +27:20:44.7 27 1.5 gr13 CLASSIFICATION. SN Ia at z=0.03, before peak.

07:58 AT2017lt 14:19:44.20 -16:50:15.7' 27 1.5 gr13 CLASSIFICATION. SN II at z=0.05 ? not sure.

08:26 LTT3864 10:32:13.90 -35:37:42.4 22 1/1.5 gr11+gr16+gr13 Spectral standard.

08:49 AT2017ng 15:20:40.81 +04:39:34.1 27 1.5 gr13 CLASSIFICATION. SN Ia at z=0.03-0.04, pre or around peak

09:18 end of the observations

09:21 RgB morning sky flats