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night-report-page---20130401


Observers: Stefan Taubenberger, Stephan Hachinger
Data reduction team: Nancy Elias-Rosa, Antonia Morales-Garoffolo


0th night of subrun: unexpectedly used rest of technicians' test night.
All observations turned out to be good quality unless noted otherwise (**).

Humidity ~30% initially, going down to ~20%. Wind ~12m/s, less in the last hours (10m/s).
Sky slightly foggy.


UT 03:20 OT ready with telescope and EFOSC2.

--- seeing DIMM 0.9'' ---
 
UT 03:20    followup  SN2013ak                  airmass=1.2    gr11/16         sl 1.0''

--- seeing image 1.2'', DIMM 1.0'' ---

UT 03:50
   followup  SN2013am                  airmass=1.4    gr13            sl 1.0''

--- seeing image 1.7'', DIMM 1.3'' ---

UT 04:30    followup
  SSS130304:114445-203141   airmass=1.1    gr11[x2]/16[x2] sl 1.0''
* Used narrowslit acq template. Slit pos.: y=992

** 2 exposures gr11, 1 exposure gr16, 2nd exp gr16 aborted (b/c gr11 single exposures had
   good S/N). Unfortunately turns out that the red part has some more noise now.


--- seeing image 1.1'', DIMM 1.1'' ---

UT 06:30    std       EG274                     airmass=1.1    gr11/16/13[x2]  sl 1.0''
* Used narrowslit acq template. Slit pos.: y=992
* order of exposures: gr11/16/13(free)/13(GG495)

--- seeing DIMM 1.0'' ---

UT 07:10    followup  PSN J13540068-0755438     airmass=1.1    gr11/16         sl 1.0''
* Used narrowslit acq. template. Slit pos.: y=993

--- seeing image 2.0'' (!), DIMM 0.9'' (!) ---

UT 08:00    followup  SN2013K                   airmass=1.8    gr13            sl 1.0''
UT 09:30    followup  SN2013K                   airmass=1.8    UBV
** UBV photometry bad quality b/c of bad seeing and beginning twilight

UT 10:10    arclamps

UT 10:20    flats     morning sky                              UBVRi
** B and V flats are not useful (sky too bright -> not enough exposures taken)



UT 10:45    end of night


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