Night Report 2014-09-21
Observers: Morgan Fraser, Chris Ashall
TAT: Cosimo Inserra, Richard Scalzo
Data reducers: Nic Walton, Nadia Blagorodnova
Conditions: Weather excellent, wind ~5 m/s and DIMM seeing ~0.7" at start of night. Appears clear/photometric at twilight, no clouds visible.
23.47 Image analysis
23.57 End of twilight
12x200s gr imaging
1200s Gr#13 spectrum (at request of Kate - to check if really is a young Ia)
02:10 SN 2013hx
Nothing in first acquisition image (checked with PESSTOEFOSCPHOT). Took 200s acquisition image, very faint source at expected position, but too faint to acquire. Switched to R#642 filter and took new 200s acquisition. Could now acquire target, started 2700s exposure in case there is some strong line emission - but given how faint this guy was to acquire, I really do not expect to see anything.
We do not see a trace in the spectrum - hence we are abandoning the remaining spectrum.
Reduced spectrum and extracted at expected positon of target, continuum is at 0 flux. However, we see a broad (7000 km/s) Halpha line at z=0.13.
Seeing increased to ~1" after 04.00
04.20 SN 2013fc
Aborted after I band as seeing (and wind) increased above 1"
07:15 Shutter failed in middle of OB. TO going to telescope to reset manually.
07:35 Shutter problem resolved - resumed observing
20x10s imaging to align with pre-explosion images
Gr#11, Gr#16 spectra
09:15 Start of twilight
09:25 GD71 standard