Night Report 2015-02-16

Observers : Laurent Le Guillou, Sylvain Baumont, Ayan Mitra

Support team : Nicolas Chotard, Pierre Francois Leget

TAT : L. Galbany, M. Fraser

We did only follow-up observations, with EFOSC.

Clear sky, low wind, below 50% humidity.

Photometric night.

(times are in UT)

CALIBRATIONS :

- Evening : EFOSC_bias, EFOSC_FlatSpec, EFOSC_SpecArc

Again, the EFOSC rotator warmed up => A few BV SkyFlats.

- Morning : EFOSC_SkyFlat: zi

SCIENCE OBSERVATIONS :

- 00:54 L745a spectro-photometric standard g11+g13+g16, airmass 1.1

- 01:06 seeing ~ 1.6 , humidity 60% , temperature 15º

- 01:28 PESSTOESO154 g16 2x2700s

- 03:21 OGLE-2015-SN-043 g13 3x2700s

(good seeing, but there were optical aberrations, PSF seems not so good)

- 05:42 image analysis

- 05:54 L745a spectro-photometric standard g11+g13+g16, airmass 1.5

humidity 40%, seeing 0.6", temperature 17º

- 06:24 LSQ15kp g11 2x1800s, g16 2x1800s

- 08:48 PS1-15at g13 1200s

=> SN-II, +50days, z ~ 0.03

- 09:15 EG274 g11+g13+g16

CONCLUSIONS :

PS1-15at : SN-II, old (30 to 60 days), z ~ 0.03