Night report 2021-04-18

Observers: Michel Dennefeld

Support: Stefan Taubenberger, Christian Vogl, Andreas Floers, Geza Csoernyei, Alexander Holas

TAT: Roberta Carini, Claudia Gutierrez, Janet Chen

NTT Operators: Cecilia Farias (1st half), Javier Alarcon (2d half)

EFOSC Calibrations:

Bias, dome_flats, arcs.

Evening: Skyflats Vgri

Morning: arcs, dome flats

Weather:

Start: humidity 28%, wind 3.9m/s, seeing 0"6

Middle: humidity 23% wind 9.3m/s, seeing 0"74

End: humidity 20% wind 8.5m/s, seeing 0"95

Comments:

01: 00 Image analysis

Slit 1"0 X-position 992

EFOSC

UT Target IAU_Name Type Set-up Slit Exposure AM Seeing Notes

23:26 Atlas20bgve SN2020abtf Follow Gr#13 1"0 2700 1.42 Moon still up (quite close to object)

00:30 Atlas20xzf SN2020ocz Follow G13 1"0 1500 1.80 1"2 Seeing 1"2 on image, 0"8 on DIM (high AM !)

01:34 Atlas21mws AT2021jyr Classif. G13 1"0 1500 1.31 0"65 Image analysis before, but still 1"1 (while DIM 0"65..at beginning)

02:10 Atlas21grt SN2021dov Follow G11+16 1"0 2x1800 1.39 DIM shows excursions up to 1"2...

03:20 Image analysis, pinhole blocked, took a while....

04:00 Galaxy of SN2018atq Follow G13 1"0 2700 1.62

04:59 Atlas21myz AT2021kax Class G13 1"0 1500 1.71 1"19 Galaxy ?

05:30 Atlas21mdm SN2021iso Follow G11+16 1"0 2x1800 1.26 1"0

06:51 ZTF21aaweqit --------- Class G13 1"0 1800 1.23 0"98 Seeing from DIM

07:46 Gaia21bwp AT2021jvd Class G13 1"0 900 1.08 0"8 " " (as a filler, not clear)

08:06 LTT7379 Standard G11+13+16 1"0 + 1"5 1.08 1"04 (DIM)

08:27 Atlas21mwj AT2021jvf Class G13 1"0 1800 1.38 0"99 (DIM)

09:01 ASASSN16jt SN2016csk Follow Imaging gVri 300 1.61 1"0 (Image) Sequence finishes slightly into twilight