Night Report 2015-02-10

Observers: Sylvain Baumont, Paula Zelaya

TAT: Joe Anderson, Nancy Elias-Rosa

Clear night, low wind, humidity from 75% to 50% .

CALIBRATIONS:

 - Evening : EFOSC_bias, EFOSC_FlatSpec, EFOSC_SpecArc,

                    SOFI_FlatJHK, SOFI_BG_Flat+Arc, SOFI_RG_Flat+Arc. 

 - 22:20  DOME OPEN  

 - 23:56  EFOSC_SkyFlat_BVR (last 'i' band sky flat shows some stars)

 - Morning 09:xy : EFOSC_SkyFlat_iRVB

--- EFOSC --- 

SCIENCE OBSERVATIONS:

 - 00:25 STD L754a : Gr11, Gr13, Gr16

 - 00:40  image analysis : failed to find a bright star around the STD field and too poor seeing. 

 - 00:47  focus

 - 01:10  OGLE-2015-SN-035 FOLLOW-UP : Gr13/2x1800s, slit 1", seeing unstable 1.0-2.0", airmass 1.26

 - 02:12  image analysis

 - 02:30  ASASSN-14ha FOLLOW-UP : Bi/2x150s, VR/200s, seeing 0.8-1.4"

               (Beware : bright row due to electronic on EFOSC_Image042_0005.fits, but away from object)

 - 03:05  OGLE-2014-SN-073 FOLLOW-UP : B/3x350s, VRi/2x250s, seeing 0.8-0.7" 

 - 04:05  OGLE-2015-SN-052 CLASSIFICATION : Gr13/1500s, slit 1", seeing 0.7", airmass 1.5. Noisy spectrum.

              Possibly SNII +3d, z ~ 0.07 , broad features around 5100A and 7000A.

 - 04:50  STD L754a : Gr11, Gr13, Gr16

 - 05:10  LSQ15hj CLASSIFICATION : Gr13/1500s, slit 1", seeing 0.6", airmass 1.1

               Blue spectrum, many broad features. Poor match to Ic-pec 98bw at max, z ~ 0.07.

 - 05:49  LSQ15hy CLASSIFICATION : Gr13/900s, slit 1", seeing 0.5", airmass 1.1

               Red galactic spectrum, extended narrow Halpha emission at 7160A, z ~ 0.09

 - 06:13  LSQ15gp CLASSIFICATION : Gr13/1500s, slit 1", seeing 0.55", airmass 1.08

               Probably a SN-Ia +10days, z ~ 0.085 

 - 06:47  ASASSN-14lp FOLLOW-UP : Gr11/1500s, Gr16/1500s, slit 1", seeing 0.55", airmass 1.2, 30º from the Moon

 - 07:56  STD LTT3864 : Gr11, Gr13, Gr16

 - 08:15  Attempt of LSQ15ey classification spectrum, only 9º from the moon => aborted!

 - 08:22  CSS150128-151522+170037 CLASSIFICATION : Gr13/900s, slit 1", seeing 0.8", airmass 1.7

               SN-II, post max, z ~ 0.08

CONCLUSIONS :

OGLE-2015-SN-052 : SN-II, +3d, z ~ 0.07

LSQ15hj                    : SN-Ic-pec (98bw), at max, z ~ 0.07 

LSQ15hy                   : galaxy, z ~ 0.09, no clear SN signal

LSQ15gp                   : SN-Ia +10days, z ~ 0.085

CSS150128-151522+170037 : SN-II, post max, z ~ 0.08