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Night Report for 2020-feb-12

Observers: Mat Smith (Southampton), Anais Möller, Melissa Amenouche (Clermont-Ferrand)
Support Team: Charlotte Angus (DARK), Miika Pursiainen (Southampton)
TAT: Priscila Pessi (CONICET), Giuliano Pignata (UNAB/MAS), Phil Wiseman (Southampton)

Afternoon Calibrations: Dome flats, Arcs, Bias frames (x3)

    Afternoon: High wispy cloud
    Sunset: 8.30 (local); 23.30 UT; stunning, but through wispy cloud; no sky flats taken
    Post-sunset: Seeing 1.0"; Wind: 2m/s
    Middle of night: Seeing 0.8"; Wind: 3m/s + high cloud covering 50% of the sky. That + moon means no photometry tonight. 
    Early morning: Seeing 1.3"; Wind: 4m/s. Heavy clouds == no more follow-ups. 
    07:45UT: Heavy clouds mean that we close for the night. 1.5+ hours lost

1. One potential target (AT2020bxd) is already classified as a SNIa, so was not targeted. 
2. ZTF20aamamnp is aka AT2020chy, but the marshall doesn't know that. 

 UTTarget     Purpose Grism/Filter Conditions Exp. time Classification Notes
 00:25 L745a Standard gr11+gr13+gr161.0"; airmass 1.2 --- ---==> image analysis 
 01:05 SN2019pcr Follow-upg13 1.0"; airmass 1.7-2.1 1x45 mins (SNII)Object is setting; 1x2700s today, 1x2700s tomorrow :)
 01:55 AT2020bdh Classification gr131.0"; airmass 1.9 1x15 mins UnclassifiedDiscovered by ZTF prior to ATLAS. Object is visible in acq. Spectrum is low S/N
 02:15 AT2019qiz Follow-up gr110.9"; airmass 1.42x30mins (TDE) Pointed at galaxy centre
 03:20 AT2019xis Follow-up gr130.8"; airmass 1.52x30mins (Light-echo) Object is visible in acq. Due to rising moon and high clouds, imaging is left for another night
 04:30 AT2020chy (ZTF20aamamnp) Classification gr131.0"; airmass 1.2 1x15 mins SNII @ z=0.054; pre-max Discovered by ZTF
 04:55 SN2019ahk Follow-up    gr11 1.0"; airmass 1.5 1x45 mins (TDE) No evidence of transient 'rebrightening' is visible in 1D extraction
 05:55 SN2019tsf     Follow-up gr13 1.1"; airmass 1.1 1x30 mins (SNIb) 
 06:30 SN2019aze Follow-up gr130.8"; airmass 1.05 1x25 mins (SNII)
 07:05 AT2020bka Classification gr13heavy clouds --- ---High clouds mean that the field is not distinguishable: skipped
 07:20 AT2020cbo Classification gr13  1.3"; airmass 1.15 1x400s SNIa @ z=0.04; -5 days ATLAS discovery.
 07:30 AT2020bft Classification gr13  1.2"; airmass 1.2 1x400s SNIIb @ z=0.04; pre-max ATLAS discovery.
 07:50 --- ------ --- --- --- Closed due to high clouds