Night report 2017-04-30

Night report 2017-04-23-30

Observers: Claudia Gutiérrez, Regis Cartier

TAT on duty: Cosimo Inserra, Joe Lyman

Support team: Regis Cartier, Claudia Gutiérrez, Mat Smith, Chris Frohmaier.

Daytime calibrations: PESSTO_bias, PESSTO_calib

Due to technical problems during the last night, the TOs where working to fix it in the twilight . So the skyflats were not obtained.

Weather conditions:

23:00 UT: Clear sky, Humidity ~21%; Atm. pressure ~ 770 hPa; Seeing ~ 0.87

03:30 UT: Clear sky, Humidity ~21%; Atm. pressure ~ 770 hPa; Seeing ~ 0.94

06:20 UT: Clear sky, Humidity ~12%; Atm. pressure ~ 770 hPa; Seeing ~ 1.63

10:00 UT: Clear sky, Humidity ~12%; Atm. pressure ~ 770 hPa; Seeing ~ 1.63

Seeing: 0.89 arcsec (01:50 UT), 1.75 arcsec (05:00 UT), 2 arcsec (09:30 UT)

UT Target RA DEC Time spent(min) slit/grism/filter Description

23:00 Technical intervention.

23:30 Image analysis

23:40 AT2017dcg 05:16:05.04 -16:07:31.1 20 gr13 Classification: SN Ia at 20 days from maximum (z~0.072).

23:56 AT2017djt 08:51:21.34 22:56:39.60 20 gr13 Classification: SN Ia at 5 days from maximum (z~0.088). The spectrum shows a strong narrow absorption Na I D consistent with the redshift obtained from the galaxy.

00:18 Image analysis

00:32 SN2016jbu 07:36:25.96 -69:32:55.2 42 gr11 Follow-up: SN IIn. STOPPED!! Technical problems.

00:57 Technical problems with the rotator, high temperature.

01:22 SN2016jbu 07:36:25.96 -69:32:55.2 42+42 gr11+gr16 Follow-up: SN IIn. We start again.

02:52 AT2017dio 11:36:27.76 18:17:46.90 60 +10 gr11+gr16 Follow-up: SN Ic ("Ic-csm").

04:02 SN2017dft 10:57:32.05 -14:50:06.0 42 gr13 Follow-up: SN Ia.

04:44 AT2017djz 11:47:51.81 -33:49:36.6 17+2 gr13 Classification: SN Ia at 2 days before maximum (z~0.072).

05:05 AT2017dcc 12:49:04.89 -12:12:22.4 60 gr11+gr16 Follow-up: SN Ic.

05:11 AT2017dka 14:01:46.09 09:29:57.4 45 gr11+gr16 Observed again to try to obtain a definitive classification. The spectrum is still blue featureless, hence we aborted gr16.

06:57 AT2017dia 13:17:28.84 03:02:54.10 25 gr13 Classification: SN Ia around maximum (z~0.11).

07:22 SN2017dfb 15:39:05.03 05:34:16.90 64 gr11+gr16 Follow-up: SN Ia.

08:30 AT2017dcf 16:26:24.64 21:18:59.40 23 gr13 Classification: SN Ia at 9 days from maximum (z~0.060).

08:55 EG274 16:23:33.7 -39:13:48.0 13 gr11+gr13+gr16 Telluric standard.

09:08 AT2017dhx 18:38:39.97 -37:36:40.4 20 gr13 Classification: Blue featureless.

09:31 AT2017dgw 19:06:51.82 -36:57:32.5 17 gr13 Classification: SN Ia at 10 days from maximum (z~0.018). Very red and noisy spectrum. No clear Na I D narrow absorption lines.

09:48 AT2017dgt 01:27:56.68 -50:41:14.30 17 gr13 Classification: SN Ia at 6 days from maximum. The object is located on the spiral arm of the galaxy (z~0.031). The redshift obtained using SNID is 0.068 (with a good match). This suggest that the SN is behind the galaxy. PLEASE CHECK!!

10:03 AT2017dch 19:55:35.69 -11:38:23.7 17 gr13 Classification: SN Ic around maximum (z~0.048).

10:23 END OF THE NIGHT