Night Report 2015-03-11

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

23.12 Sunset

23.25 BR skyflats

23.33 Focus

23.42 Spectrophotometric standard LTT745a

23.57 PSNJ07361576-6930230

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

01.02 Re-did focus (temperature increased quite suddenly)

01.07 ASSASN-14ha

Attempted to take followup spectra, but SN not visible on acquisition image.

Suggest deep imaging instead - can try again tomorrow if PI wants.

01.12 PSNJ10544216-2104138

2x1800s Gr#13 follow-up. Almost identical to 05hk.

02.17 PS15ae

1x1800s Gr#11, 1x1800s Gr#16 follow-up spectra

03.34 Switching to SOFI

TO tried to focus, PSF was very distorted so attempted image analysis

03.50 PSNJ07361576-6930230

JHK phot, BG+RG spectra. Source is detected in all three filters, spectra have good

S/N in BG, not so good in RG.

05.12 HIP035096 Telluric standard for PSNJ07361576-6930230

05.17 PS15br

JHK imaging

06.34 SN2015D

JHK imaging

07.43 PSNJ10544216-2104138

JH imaging (to flux calibrate BG spectrum taken on previous night)

08.16 Switch to EFOSC2

08.23 SN2015D

Focus

2x1800s Gr#16 followup

09.40 LSQ15rw

Gr#13 classification

10.00 LTT7379 spectrophotometric standard

gr skyflats (aborted after 4x g' flats, as the sky was too bright).