Night report 2021-04-17

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   23%, wind  2.8m/s, seeing ... DIM out of service 

Middle: humidity 25%  wind  6.2m/s, seeing 0"55 (DIM works again)

End: humidity  20% wind   5.0m/s, seeing 0"8 (DIM), 1"2 (image)

Comments:

00 : 02 Image analysis (Not done at the beginning, only Hartman focus)

Slit 1"0  X-position 992

EFOSC

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

23:26  Atlas21jfp          SN2021heh   Follow-up    Gr#13    1"0    1200 sec        1.7                     SN and Nucleus in the slit

00:00   Image analysis

00:50  Atlas21lhz         AT2021iex       Classific.     G13       1"0     1800              1.38     1"1        Seeing measured on acquisition image

01:29  Atlas21mtr        AT2021jlr        Class            G13      1"0      1500              1.87

02:05  LTT3218               ------              Standard     G13+11+16  1"5                     1.18    

02:35  Atlas21jmk      AT2021hqe     Class            G13        1"0    2000               1.50                   Focus redone before exposure

03:40 Atlas21mwk     AT2021jvi        Class            G13        1"0    1800               1.15    0"9    Seeing measured on acquisition image, after image analysis

04:16 Atlas21dwl       SN2021cgu     Follow          G13        1"0    1800               1.47    0"9   

04:55 Atlas21hra       SN2021fmu    Follow          G11+16  1"0    2x1800           1.51    0"6 !    DIM measure (works again)

06:10 Atlaz20bhfe    SN2020acat     Follow         G11+13   1"0    2x1500          1.57 

07:18 Atlas21mdm    SN2021iso      Follow           G11       1"0    1800               1.95                Gr11 only, too high AM (more tomorrow)

08:01 Gaia21bxd       AT20221jzb     Class             G13       1"0     900               1.48                 Trial, as a filler, not clear what it is (star ?)

08:26 MasterOT-J...    AT2021gbs     Class             G13        1"0    2400             1.30    0"8       1"2 on image (focus redone before),

09:14 LTT7379              --------           Standard    G11+13+16    1"0+1"5             1.04