Observers: Heather Campbell, Nadejda Blagorodnova
Support team: Morgan Fraser
TAT: Joe Anderson, Maria Teresa Botticella
Moon down during all night
Beginning night: Humidity 40%, wind 5 - 10 m/s, DIMM seeing 1", pretty cloudy, non-photometric.
Middle of the night: Humidity 40%, wind 15 m/s, DIMM seeing 1.2", clouds cleared.
End of the night: Humidity 50%, wind 10 m/s, DIMM seeing 1.2", no clouds.
23:50 No skyflats taken, as the sky looked pretty cloudy.
23.55 Telescope focusing
00:07 L745a - spectrophotometric standard
Classification 600s, Gr#13. SNID classification is a IIb, z=0.14, pre-max. Emission in Ca II
00:50 SKY_J1353283-5757506 (1h 30m)
Humidity 45%. Beginning of exposure: target at airmass 1.3 and seeing around 1.5". Middle: airmass 2.4 and seeing 1.". End: airmass 2.87 and seeing 1.2"
2x1200s in Gr#11 and 2x1200s in Gr#16 taken.
30s and 60s in V did not reveal the target. It has been aborted. Checked for NEOs, but: No known minor planets, brighter than V = 20.0, were found in the 15.0-arcminute region around R.A. = 05 56 32.33, Decl. = +09 34 53.3 (J2000.0) on 2014 02 21.00 UT.
1x2700s Gr#13 Exposure.
The emission at 8400A is gone. Looks like a nice CV with Balmer absorption lines, and some little emission in H alpha. Has small emission associated with S.
1500s Gr#13 Classification - SN Ia around max at z=0.16
04:05 LSQ14pt (1h 40m)
3x1800s Gr#16 Taken.
05:50 Telescope focus
The target has moved around 17 arcsecs since the position on 27 of Feb.
900s Gr#13 Classification - SN Ia pre-max at z=0.045
We had trouble identifying the target with 30s exposure in V. Finally we took 60s in R filter to identify it.
1x2400s. The exposure revealed poor S/N. The wind is 15 m/s and the seeing dropped to 1.5". As there was very little signal on the first spectrum, we decided to abort and return tomorrow.
With 120s exposure in the acquisition image, the target was not visible, so we gave up.
900s Gr#13 Classification - SN Ia, best match with subtype 91T, z=0.05 at pre-max.
1200s Gr#13 Classification - Taken with slit 1.5", as the seeing on the acquisition image is 1.6".
Another wonderful SN Ia, +2 weeks, z=0.14
08:00 Humidity 60%, DIMM seeing 1", wind 10m/s
900s Gr#13 Classification. Taken with slit 1.5", as the seeing on the acquisition image is 1.6". SN blended with host galaxy.
SN II at z=0.3 (measured from the galaxy emission lines), around +5d.
1200s Gr#13 Classification. Another SN Ia, +5d at z=0.18.
09:44 EG274 - spectrophotometric standard
10:01 Skyflats grz
Aborted, as the flats contained too many stars. Then the sky was already too bright.