JHK phot, BG+RG spectra. Source is detected in all three filters, spectra have good
03.34 Switching to SOFI
2x1800s Gr#13 follow-up. Almost identical to 05hk.
Attempted to take followup spectra, but SN not visible on acquisition image.
01.02 Re-did focus (temperature increased quite suddenly)
23.25 BR skyflats
Observer : Morgan Fraser
Support team : Southampton (Mat Smith and others)
TAT : Joe Anderson, Cosimo Inserra
Start of night: clear sky, but with some haze towards the horizon, also clouds behind mountaint to N-E, 5 m/s wind, 50% humidity
Moon from 02.50 onwards at 65% illumination
End of night:
Seeing: DIMM was only working intermittently, but from this an acquisition images, it was probably <1.2" for most of the night
I concentrated on EFOSC priority followup before the moon rose, then switched to SOFI to do a couple of additional critical SOFI requests which turned up. End of the night I switched back to EFOSC, as there were no SOFI targets at suitable RAs. Only one classifcation tonight.
Afternoon calibrations: SOFI arcs and specflats
23.42 Spectrophotometric standard LTT745a
1x1500s Gr#11, 1x1500s Gr#16 follow-up spectra
From very rough photometry on the acqusition image, it looks like the SN is
~0.5 mag brighter than last night, supporting a young age
Suggest deep imaging instead - can try again tomorrow if PI wants.
1x1800s Gr#11, 1x1800s Gr#16 follow-up spectra
TO tried to focus, PSF was very distorted so attempted image analysis
S/N in BG, not so good in RG.
JH imaging (to flux calibrate BG spectrum taken on previous night)
08.16 Switch to EFOSC2
2x1800s Gr#16 followup
10.00 LTT7379 spectrophotometric standard
gr skyflats (aborted after 4x g' flats, as the sky was too bright).