NIght report page - 20131013

Observers: Cosimo Inserra, Ting-Wan Chen

Support team: J. Polshaw, S. Smartt

TAT on duty: Nancy Elias-Rosa, Morgan Fraser


Subrun 3, night 1

Instruments: EFOSC2


beginning: wind speed 2.5 m/s; humidity 33 % ; no clouds

middle: wind speed 5.4 m/s; humidity 17 %; no clouds

end: wind speed 8.2 m/s; humidity 10%; no clouds


EFOSC2 bias

EFOSC2 Spectroscopic flats and rcs

EFOSC2 Skyflats BRz


Target Type UT Filter/Grism Slit Seeing Grade (A/B/C) Comments

LTT7379 STD 23:50 gm11/gm13/gm16 1./1.5 0.9" A (re-focus)

SN2012ca FOLLOW-UP 00:03 gm13 1. 0.75" A

SN2013fs FOLLOW-UP (strange noise in the images, so we observed images first, hope it will decrease) B

(UT 02:25 - 02:54) ISSUE TIME

We did a test bias for checking the noise, the pattern was still there and was the same found for LSQ13bnx in the classification spectrum.

The TO at the beginning tried to change a cable at the NTT, but it did not improve, after that we restarted EFOSC2

but even in this case we did not have a good luck.

After a discussion with the daily TO and that of the 3.6 we decided to change the wind rotator

and apparently it worked. Unfortunately it worked for just 1 image and from the 2nd we had again the problem.

The TO went again to the NTT to physically shut down the detector and restart the machine.

After 4 test clear images without the electronic noise we decided to start again the observation and do not switch to SOFI.

OGLE-2013-SN-079 FOLLOW-UP 03:33 g11/g16 1. 1" C (Aborted after the first spectrum)

Changed to SOFI due to the noise pattern (UT 04:35 - 04:44)

OGLE-2013-SN-079 FOLLOW-UP 04:55 JHK - 0.8" A

PSNJ01591443+1 90139 FOLLOW-UP 06:12 JHK - 0.6" A (We had to do last sky_K after because when we modified the OB, the TO put the wrong number of exposure: 15 instead of 16)

SN2013fc FOLLOW-UP 08:54 JHK - 0.7" A


Please note that the followup spectra of SN2013fs and OGLE-2013-SN-079 were badly affected by electronic noise and therefore the reductions have not been uploaded to WISeREP.