Night Report 2014-05-04

Observers: Sandra Benitez, Joe Polshaw

Support: Cosimo Inserra

TAT on duty: Maria Teresa Botticella, Emma Walker

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WEATHER CONDITIONS:

start: wind 3 m/s; temp. 12.8 C; humid. 21%; Clear

middle: wind 6.3 m/s; temp. 11.9 C: humid. 19%; Clear

end: wind 9.1 m/s; temp. 12.1; humid. 16%; Some cirrus

The night was mostly clear, but there was some cirrus in the morning.

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INSTRUMENTS: EFOSC2, SOFI

CALIBRATIONS

Afternoon:

-- SOFI dome flats

Evening

-- EFOSC2 UVi sky flats (May have been too late for some of the V- and i-band flats)

Morning:

-- EFOSC2 bias, spec. flats, arcs (We asked for these to be taken in the morning, but they were actually taken during afternoon of the next day)

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OBSERVATIONS

Target Type UT-Start Filter/Grism Slit (") Seeing (") Notes

*** EFOSC2 ***

LSQ14bdq Class. 23:26 Gr13 1 0.6 (1)

CSS140424... Follow (SPEC) 23:57 Gr11 1 0.8 (2)

CSS140424... Follow (IMAG) 01.09 UBVRi N/A 1 (3)

CSS140421... Follow (SPEC) 01:25 Gr13 1 1.1 (4)

CSS140421... Follow (IMAG) 03:06 UBVRi N/A 1.1 (5)

*** CHANGE TO SOFI ***

Illum. Mask STD (IMAG) 03:52 JHKs N/A 0.8 (6)

CSS140421... Follow (IMAG) 04:12 JHKs N/A 1.1 (7)

CSS140424... Follow (IMAG) 05:25 JHKs N/A 0.9 (8)

*** CHANGE TO EFOSC2 ***

LTT7379 STD (SPEC) 06:17 Gr11/13/16 1/1.5 0.9 -

LSQ14bjh Class. 06:39 Gr13 1 1.1 (9)

PG1657 STD (PHOT) 07:13 UBVRi N/A 1 -

PG1633 STD (PHOT) 07:18 UBVRi N/A 1 -

Marka STD (PHOT) 07:24 UBVRi N/A 1 -

CSS140501... Class. 07:34 Gr13 1 1. (10)

LSQ14bjb Class. 07:59 Gr13 1 1. (11)

SN2009ip Follow (IMAG) 08:38 BVRi N/A 1.2 (12)

LSQ14bjb Class. 09:49 Gr16 1 1.3 (13)

EG131 STD (SPEC) 10:30 Gr11/13/16 1 1.1 (14)

(1) Very long rise-time (>30 days), hostless. Very blue spectrum with some lines in the blue. Could it be a SLSN?

(2) CSS140424-133007-212728. 2*1800s gr11

(3) CSS140424-133007-212728. 300s U, 45s B, 30s V, 20s Ri. Lost a small amount of time at the start of the OB since the telescope needed to be re-focused.

(4) CSS140421-142042+031602. 3*1800s grism 13

(5) CSS140421-142042+031602. U 2*250s, B 120s, VRi 60s (exptimes slightly reduced from the previous OB since we are running slightly behind schedule).

(6) Same OB as 2014-04-28

(7) CSS140421-142042+031602. 1080s J, 1440s H,Ks

(8) CSS140424-133007-212728. 400s J, 360s H, 720s Ks. Used the OB "JHK_J_16_0__17_5__gal_less90sec.obx".

(9) SN type II about a month after max., z=0.04211 (host spec.)

(10) CSS140501-170414+174839. A SN type Ia, probably normal, z~0.075 to 0.08, pre-max.

(11) Looks very faint in the acquisition image. Increased exp. time to 1800s. The seeing increased to ~1.5" during the OB. Looks very weird. Potentially super interesting - is it PS1-10afx like? Extremely red with very little emission in the blue. Will repeat with gr16 at the end of the night.

(12) Telescope re-focused. 5*200s BVi, 3*100 R (in order iRVB). Seeing began at ~1.2", but fluctuated between 1.2" and ~1.4" during the rest of the OB.

(13) Try LSQ14bjb again with Grism 16 this time to see if we can learn anything more. We planned to go for PSNJ23322284+1551106 here but it's very low, so will go for it on the second or third night.

1800s exposure - it is much brighter in the i-band acquisition image than V. Seeing began at 1.2 to 1.3", but increased to 1.5" during the exposure, then back down to 1.3". Observing into twilight. There seem to be a couple of narrow lines.

(14) Just did 1" slit since 1.5" was not used, and also observing well into twilight... Grism 13 probably useless (too late).