Night report page - 20130403

Observers: Stefan Taubenberger, Stephan Hachinger

Data reduction team: Nancy Elias-Rosa, Antonia Morales-Garoffolo

2nd regular night of subrun (first SOFI; late night: switched to EFOSC).

All observations turned out to be good quality unless noted otherwise (**).

All EFOSC spec acquisitions with narrowslit template, slit pos. stable at y=992

except for last (stdstar) observation y=991.

initial weather cond:         humidity ~35%, wind ~7m/s, ~clear sky

middle-of-night weather cond: humidity ~30%, wind ~10m/s, ~clear sky 

late-night weather cond:      humidity ~40%, wind ~10m/s   

afternoon   PESSTO_SOFI_FlatJHK, PESSTO_SOFI_specflat & SpecArc OBs executed

UT 23:45    start of night with SOFI

-- seeing image 1.2'' ---

UT 23:50    std       GD71                      airmass=1.7    BG/RG    long_slit_1

* started in late twilight

** relatively low S/N in observed spectra

UT 00:10    tellstd   Hip039102                 airmass=1.0    BG/RG    long_slit_1

* telluric standard for SN 2013ak

-- seeing image & DIMM 0.8'' ---

UT 00:25    followup  SN2013ak                  airmass=1.0    JHK

* imaging accidentally done first, should not matter too much

-- seeing DIMM 0.9'' ---

UT 00:40    followup  SN2013ak                  airmass=1.0    BG/RG    long_slit_1

UT 01:45    tellstd   Hip064944                 airmass=1.4    BG/RG    long_slit_1

* telluric standard #1 for SN2013am

-- seeing DIMM 1.2'' ---

UT 02:00    followup  SN2013am                  airmass=1.4    BG/RG    long_slit_1

UT ~3:50    tellstd   Hip060074                 airmass=1.4    BG/RG    long_slit_1

* telluric standard #2 for SN2013am

UT ~4:00    followup  SN2013am                  airmass=1.4    JHK

--- seeing image & DIMM 0.9-1.0'' ---

UT 04:30    followup  LSQ13sj                   airmass=1.1    JHK

** J & H SN visible, K SN marginally visible

--- seeing image 1.7'', DIMM 1.0-1.4'' ---

UT 05:15    followup  SN2013K                   airmass=1.9    JHK

* K done twice (as in prev observ. run) but already 1st exposure good quality

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switch to EFOSC

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--- seeing image 1.2'', DIMM 0.9'' ---

UT 06:40    followup  LSQ13sj                   airmass=1.3    gm13     sl 1.0''

** spectrum not optimum S/N despite longer int time than for classification

--- seeing image 2'', DIMM 1.4...1.1'' ---

UT 08:30    classif.  SSS130402:141135-282828   airmass=1.2    gr13     sl 1.0''

** occasionally bad seeing, oscillating with time. not changing slit.

--- seeing image 2.5'', DIMM 1.4...1.0'' ---

UT 09:00    followup  SN09ip                    airmass=2.1    gr13     sl 1.0''

** difficult conditions:

   occasionally very bad seeing, oscillating with time. not changing slit.

   observed ~ 1/4 hr into twilight

UT 10:00    std       EG274                     airmass=1.1    gr13[x2] sl 1.0''

* obs in twilight

UT 10:20    arclamps

UT 10:30    end of night