Night report 2020-02-18

Observers : Melissa Amenouche, Anais Möller (Clermont-Ferrand), Mat Smith (Southampton)
Support team:  Tomas Muller, Miika Pursiainen (Southampton), Charlotte Angus (Dark)
TAT:  Lluís Galbany (Granada), Regis Cartier (CTIO), Hanin Kuncarayakti (Turku)

Summary : Photometric night. Variable seeing at times, but no evidence of clouds. 

Afternoon Calibration: PESSTO_bias; PESSTO_calib (flats only)

Weather:
    afternoon: blue skies
    Sunset : good conditions
    Post-sunset : good conditions
    Middle night : good conditions
    Early morning: good conditions
  
Comments:

Observations:

 UT  Target  Purpose  Grism/filter  Conditions  Exp.Time  Classification  Notes
23:46  Skyflats  Calibration  grz  1.05'' Airmass: 1.02
     
00:26 L745a Calibrationgr11,gr13,gr16(sl1),gr13(sl1.5) 1.2'' Airmass: 1.01

 
 00:50AT2020cdrClassification gr13 sl1 1.2'' Airmass: 1.2 180s SNIa @ 0.019 (at max) 
 01:05SN2018ibbFollow-up riz 1.07'' Airmass: 1.09 3x200s  dithered
 01:40 SN2018ibb Follow-up BVg 1.2'' Airmass: 1.0 3x200 (g,V)  5x200 (B)
 dithered
 02:35 RU149 Standard UBG 1.1'' Airmass: 1.15 23mins  
 02:45 AT2020bza Classification gr13 1.03'' Airmass 1.77 15min Ia-91T @ 0.0885 (at max) 
 03:13 AT2020ank Follow-up gr16 1.26'' Airmass 1.20 45min  
 04:10 AT2020ank Follow-up gr11 1.28'' Airmass 1.25 45min  
 05:00 SN2019unb Follow-up gr13 1.3'' Airmass 1.2 2x2700s  
 07:00 SN2018evt Follow-up gr13 1.2'' Airmass 1.15 2700s  
 07:45 AT2018dyb Follow-up gr16 1.16'' Airmass 1.4 2700s  
 08:35 AT2020cqp Classification gr13 1.1'' Airmass 1.1 15mins SNIa @ 0.077 (pre-max) 
 8:55 AT2020cry Classification gr13 1.2'' Airmass 1.1 15mins Blackbody continuum 
 9:19 EG274 Standard gr11, gr16, gr13    
  Skyflats  BVRi    


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