Night Report 2015-02-13

Observers : Laurent Le Guillou, Ayan Mitra

Support team : Nicolas Chotard, Pierre Francois Leget

TAT : Joe Anderson, Nancy Elias-Rosa

Clear sky, low wind, below 50% humidity.

Photometric night.

(times are in UT)

CALIBRATIONS :

- Evening : EFOSC_bias, EFOSC_FlatSpec, EFOSC_SpecArc, EFOSC_SkyFlat BVRi

- Morning : EFOSC_SkyFlat grz

SCIENCE OBSERVATIONS :

--- EFOSC ---

- 00:20 seeing ~ 1"

- 00:29 Classification of ASASSN-15da gr13

SN Ia age 1day z = 0.048

- 00:45 gd71 standard gr11+gr13+gr16

- 01:06 PESSTOESO154 follow up gr11 2x2700 s

- 02:40 PG1047 photometric standard

- 03:00 OGLE-2014-SN-047 photometry UBVRi

- 03:00 seeing ~ 0.7"

- 03:45 LSQ15he classification with gr13

SN Ia age ~ 17 days z ~ 0.12

- 04:35 L745a standard star gr11+gr13+gr16

- 05:00 CSS150210-085514-080940 classification with gr13

SN IIP ?? low S/N

- 05:25 LSQ15in classification gr13

can't distinguish from the galaxy

- 05:55 LSQ15jn classification gr13

SN Ia age ~ 3 days z~ 0.09

- 06:23 SN2015d follow up gr11+gr16 1500s each

- 07:30 EG274 standard star gr11+gr13+gr16

- 07:45 PG1323 photometric standard

- 07:55 Gaia15abd classification gr13

The object seems to be the bright spot close

to the galaxy (the finding chart is very bad).

according to snid, may be a SNIa +40 days z ~ 0.027

- 08:35 LSQ15lp classification with gr13

SNIa around + 10 days z ~ 0.048

- 08:45 seeing ~ 0.7"

CONCLUSIONS : (see attached spectra)

ASASSN-15da : SNIa age 1 day z = 0.048

LSQ15he : SNIa age ~ 17 days z ~ 0.12

CSS150210-085514-080940 : SN IIP ?? low S/N

LSQ15jn : SNIa age ~ 3 days z~ 0.09

Gaia15abd : SNIa ? + 40 days z ~ 0.027

LSQ15lp : SNIa around + 10 days z ~ 0.048