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