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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





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