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Night report 2013-11-29

Observers: Michel Dennefeld, Joe Lyman, David Bersier        TO: Ariel
Support team:  J Maund
TAT on duty: Andrea Pastorello, Annalisa de Cia

Instruments: EFOSC2

beginning: wind speed 2 m/s; humidity 21 % ; clear
middle: wind speed 1 m/s; humidity 26 %;  clear
end: wind speed 4 m/s; humidity 8 %;  clear


IMPORTANT NOTE:  The problem with the structure in the bias is not completely solved. It has a much lower amplitude than what was seen in images of Nov 25 but it varies with time, it can be different from one bias frame to the next. We decided to not do faint objects because they would be the most affected by this extra noise. There is hope that the problem could be fixed for tomorrow.

OBSERVATIONS:  start regularly at sunset. 

Evening sky flats: BR (5 each), followed by Arcs

Target                                          Type             UT          Filt/Gm     Slit      Grade    Comments
Feige110                                      Std               00:26      all            1/1.5    A 
SN2013fs                                      Follow          00:59      g11/g16    1         A           seeing 1.1"
SN2013fs                                      Follow          02:00      UBVRi                              same OB as spectrum above
MLS131126-024306+163425          Class            02:22      g13           1         A          Ia near max, z~0.07
MLS131126-024708+163617          Class            02:46      g13           1         A          IIP near max, z~0.04
LSQ13ddu                                    Class            03:16      g13           1         A          Very blue, no broad line.
OGLE-2013-SN-124                       Class            03:49     g13            1         A          Ia ~1 wk past max, z~0.125. Seeing 1.15"
OGLE-2013-SN-126                       Class            04:22     g13            1         A          Ia near max, z~0.06. Seeing ~1.1
OGLE-2013-SN-118                       Follow           05:09     g11            1         A          seeing ~0.9"
OGLE-2013-SN-118                       Follow           05:41     g16            1         A          seeing 1"
LSQ13der                                     Class            06:43     g13            1         B          Ia pec or Ic (BL?). Please make it a Ic-BL....
OGLE-2013-SN-128                       Class            07:13     g13            1         A          No SN feature, strong contamination by host (z=0.045 from em. lines))
PSNJ114845-281731                     Class            07:40     g13             1         A          Possible Ic, age unclear
L745a                                           Std               08:00     all              1/1.5 

Morning calibrations:  Sky flats, 5r (good), 5z (last is a bit high)