Night report page - 20130419

Observers: Stefan Taubenberger, Stephan Hachinger

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

3rd night of 3rd subrun (only EFOSC2) -- last night of run.

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

All acqusitions for spectra with NarrowSlit template, slit stable at y=992.

Note: airmass values are estimates based on visibility chart (exact vals pls see files) -- this has been the same in our other night reports.

initial weather cond:          humidity ~15%, wind speed ~8km/s, sky clear

middle-of-night weather cond:  humidity ~10%, wind speed ~12km/s, sky clear  

late-night weather cond:      

early eve   calibration OBs:

            domeflat-specpol, arc-specpol

            (slitpos-specpol not done: yesterday slit pos. turned out OK w/o check OB)

            PESSTO_calib

            PESSTO_bias

UT 22:50    start of night

            skyflats i

UT 23:00    std.      LTT3864                    airmass=1.2    gr11/16/13[x2]  sl 1.0''

--- image analysis ---

--- seeing image 1.5'', DIMM 0.6'' ---

UT 23:35    followup  OGLE-2012-SN-006           airmass=2.1    gr13            sl 1.0''

** obj weak and low, half-moon -- OBS ABORTED after 1 spec (no hope)

--- seeing image 1.2'', DIMM 0.6'' ---

UT 00:50    followup  SN2013ai                   airmass=1.8    gr13            sl 1.0''

--- seeing image 1.0'' yay!!! ---

UT 01:45    followup  SSS130404:102043-062657    airmass=1.1    gr13            sl 1.0''

* used gr13 instead of gr11/16 to save time (night overbooked)

UT 03:05    class     LSQ13aav                   airmass=1.1    gr13            sl 1.0''

--- seeing image 1.5'', DIMM 1.2'' ---

UT 03:30    followup  LSQ13fn                    airmass=1.1    gr11            sl 1.0''

** quite bad S/N, however improved for 2nd and 3rd sub-exposure as moon gone

--- seeing DIMM 0.8'', image 1.1'' ---

UT 05:50    followup  SSS130221:133330-194457    airmass=1.2    gr11            sl 1.0''

** quite bad S/N

* photometry not possible (night overbooked)

--- seeing image 1.8'' (2013K) ---

UT 07:50    followup  SN2013K                    airmass=1.8    gr13            sl 1.0''

* photometry not possible (night overbooked)

--- seeing image 1.6'' ---

UT 08:45    followup  SN2009ip                   airmass=1.6    gr11            sl 1.0''

* observed into twilight

UT 10:15    std.      EG274                      airmass=1.0    gr11/16/13[x2]  sl 1.0''

* observed in twilight

UT 10:25    specpstd  BD14-4922 (pol)            airmass=1.0    gr13 specpol

* observed in twilight

UT 10:25    specpstd  HD131923 (unpol)           airmass=1.4    gr13 specpol

* observed in twilight

UT 10:45    arclamps

UT 11:00    end of night