Night Report 2015-01-13

Observers: Christoffer Fremling, Anders Nyholm

TAT: Annalisa de Cia, Morgan Fraser

Sky not photometric at the start of the night. We perform only EFOSC2 Spectroscopy, emphasis is on follow-up.

Still some problems with the PESSTO marshal (will not accept new tickets). Seeing improved from 1” down to sub 0.5” during the night!

CALIBRATIONS:

- 00.10UT: 1x PESSTO_bias

- 00:20UT: 1x PESSTO_calib

- 23:47UT: Sunset

SCIENCE-OBSERVATIONS:

EFOSC observations

- 00:54 SN2014cx followup, gr11 & gr16, Airmass=1.4, Seeing=1.14”

Comment: Target setting fast at the beginning of the night, 2x1500 barely possible

Very nice SNR for the spectrum in gr11,

- 02:00 ASASSN14lw followup gr11 & gr16, Airmass=1.5, Seeing=0.62”

Comment: Target also setting early, 2x1200 performed. Nice signal both grisms.

- 02:56 PESSTO-10 followup, gr11 & gr16, Airmass=1.35, Seeing=0.69”

Comment: decent SNR obtained, however, several cosmic rays

- 03:53 ASASSN14ha FOLLOWUP, gr11 & gr16, Airmass=1.25, Seeing=0.59”, 2x1200, excellent seeing allowed slight reduction in exp.t

Comment: H-alpha visible, type II, or SN impostor spectrum?, good signal

- 04:55 OGLE-073 followup gr13, Airmass=1.3, Seeing=0.76”

Comment: SN very faint, but great seeing of down to 0.51” during the exposures should hopefully help

- 06:40 STD_l745 Airmass=1.1, Seeing=0.62”

- 07:16 ASASSN14lp followup gr11 & gr16, Airmass=1.1, Seeing=0.54”

Comment: Fairly close to the moon, but still got a fantastic signal due to exceptional seeing down to 0.49”


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SCIENCE-CONCLUSIONS:

with EFOSC:

Followup

- SN2014cx, Gr11+Gr16, good signal in both grisms

- ASASSN14lw, Gr11+Gr16, good followup spectrum

- PESSTO-10, Gr11+Gr16, OK signal

- ASASSN14ha, Gr11+Gr16, OK

- OGLE-073, Gr13 3000s x 2, SN very faint, low SNR spectrum

- ASASSN14lp, Gr11+Gr16, fantastic signal and follow-up spectrum