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