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Night report 2013-11-30

Observers: Michel Dennefeld, Joe Lyman, David Bersier        TO: Ariel
Support team:  J Maund
TAT on duty: Andrea Pastorello, Annalisa de Cia
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Instruments: EFOSC2

WEATHER CONDITIONS
beginning: wind speed 2 m/s; humidity 5 % ; clear
middle: wind speed 5 m/s; humidity 18 %;  clear
end: wind speed 8 m/s; humidity 19 %;  clear

Afternoon CALIBRATIONS: EFOSC2 bias, arcs, dome flats

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. On science frames during the night, there is virtually nothing to be seen, maybe science data are fine after all.

OBSERVATIONS:  start regularly at sunset.  Sunset at UT23:36, start of night at UT01:01

Evening sky flats: g (x5), z (x5), r (x1)

Target                                          Type             UT          Filt/Gm     Slit      Grade    Comments
Feige110                                      Std               00:30      all gm       1/1.5                start in twilight
LSQ13cut                                     Follow          00:47       V                                     to check if object is there
SN2009ip                                     Follow           00:54      UBVRi
PSNJ01462790-5840238                Class           01:47       g13           1         A          Ia, best fit 05hk (02cx-like), host at z=0.006. Seeing 0.95"
OGLE-2013-SN-100                      Class            01:26       BVRi                   A          seeing 0.95" in i, 1." inB
OGLE-2013-SN-100                      Class            02:22       g16           1         B          dominated by host, seeing ~1.2"
LSQ13dhj                                     Class           03:41        g13           1        A           Ia a few days before max, z~0.08
PG0231                                       Std               04:14        UBVRigrz            A
LSQ13cuw                                   Follow           04:29       g11           1         A/B       IIP at z=0.4?, seeing 1.1"
LSQ13cuw                                   Follow           05:31       g16           1         A/B       
LSQ13dht                                    Class            06:21       g13           1         A/B        Very red. Flaring M dwarf
LSQ13czk                                   Class             06:53       g13           1        A/B        Ia ~4 wks  past max, z~0.06
CSS131031-095508+064831         Follow            07:21       g11           1        A
CSS131031-095508+064831         Follow            07:52       g16           1        A

Morning calibrations: EFOSC Arcs, sky flats 5i, 4V, 5U)

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