Night Report 2014-04-28
Observers: Sandra Benitez, Joe Polshaw
Support: Kate Maguire
TAT on duty: Andrea Pastorello, Cosimo Inserra
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WEATHER CONDITIONS:
start: wind 7 m/s; temp. 10 C; humid. 33%; Clear.
middle: wind 10 m/s; temp. 10 C: humid. 19%; Clear.
end: wind 9.9 m/s; temp. 8.6; humid. 24%; Clear
Seeing varied between 1"-1.2". Atmospheric pressure was low but we didn't evidence of clouds during the night. ** There were some clouds right on the horizon at the very end of the night when we left the telescope in the morning, and reports that there were some small patches during the night - but we didn't notice anything ourselves. Probably best to assume that the night was NOT photometric, after all. **
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INSTRUMENTS: SOFI, EFOSC2
CALIBRATIONS
Afternoon:
-- SOFI flats (JHKs)
Morning:
-- Sky flat VRi
-- EFOSC arcs, bias, flats
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OBSERVATIONS
Target Type UT-Start Filter/Grism Slit (") Seeing (") Notes
*** SOFI ***
LSQ14mo Follow. (IMAG) 23:08 JHKs N/A 1 -
LSQ14asn Follow. (IMAG) 00:30 JHKs N/A 1 -
LSQ14pt Follow. (IMAG) 01:08 JH N/A 1.1 -
CSS140421... Follow. (IMAG) 01:55 JHKs N/A 1.2 (1)
ILL_S273-E STD (Illum. mask) 03:09 JHKs N/A 1.2 (2)
*** Change to EFOSC2 ***
CSS140424... Class. 03:55 Gr13 1 1.1 (3)
CSS140421... Follow. (SPEC) 04:16 Gr11+16 1 1.0 (4)
CSS140421... Follow. (SPEC) 07:00 UBVRi N/A 1.0 (5)
EG274 STD (SPEC) 07:22 Gr11/13/16 1/1.5 1.1 (6)
CSS140424... Class. 07:42 Gr13 1 1.1 (7)
CSS140426... Class. 07:52 Gr13 1 1.1 (8)
LTT7379 STD (SPEC) 08:05 Gr11/13/16 1/1.5 1.1 -
PS1-14xv Class. 08:27 Gr13 1 1.1 (9)
PG1633 STD (PHOT) 08:43 UBVRi N/A 1.2 -
PG1657 STD (PHOT) 08:50 UBVRi N/A 1.2 -
SN2009ip Follow. (PHOT) 08:58 VRi N/A 1.1 (10)
CSS140427... Class. 09:38 Gr13 1 1.1 (11)
PS1-14xw Class. 09:02 Gr13 1 1.1 (12)
(1) CSS140421-142042+031602.
(2) STD star observation for the SOFI illumination mask. Night has been photometric so far (no clouds at all). **It looks as though the dither pattern is not centred properly, and the STD star is right at the edge of the chip in some of the images. Hopefully usable but will repeat (with a shift in coords) another night if not.**
(3) CSS140424-123226+154840. SN type Ia, ~a week before peak, z~0.18
(4) CSS140421-142042+031602. 2*1800s, grism 11 + 16.
(5) CSS140421-142042+031602. 3*300s U, 200s B, 90s V, 60s Ri. ** We lost around 30 minutes here since the system crashed in some way **
(6) Again forgot to select 10" slit in set-up - will be able to use it from tomorrow night, so if conditions are photometric then we will use the "wide-slit" OB.
(7) CSS140424-133007-212728. A variable star?
(8) CSS140426-171938-010130. A normal type Ia, about 1 week after max, z~0.03.
(9) Looks real in acquisition image. SDSS spec of host z~0.064. SN type Ia several weeks after max. z~0.064
(10) 3*200s V and i, 4*100s R.
(11) CSS140427-222246+192845. Faint host galaxy. We think it may be a SN type Ic at z~0.05, pre-max.
(12) Observing into twilight. Bright target. Type Ia, z~0.024, a few days before max.