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Night report 2021-08-06

Observers: Matt Nicholl, Evan Ridley, Ben Gompertz
Support: Sara Muñoz, María Delgado, Raúl Gonzalez, Lluís Galbany
TAT:  Jacob Teffs,  Michael Fulton,  Janet Chen


Calibrations:
Afternoon: All EFOSC and SOFI calibrations

Weather:
Start: humidity ~ 17%, wind ~ 10m/s, seeing ~ 1.6"
Middle:
 humidity ~ 10%, wind ~ 14m/s, seeing ~ 1.6"
End: humidity ~ 20%, wind ~ 11.5m/s, seeing ~ 2.4"

Comments (times in UT):
High wind during day, dropping right around sunset, currently safe to open
Shutter problem encountered during first standard, delayed ~ 30 mins in beginning of night
Starting science targets without image analysis due to high seeing
03:00 wind picking up
06:00 TELESCOPE CLOSED DUE TO WIND (during observations of SN2021tpf)
07:25 DOME OPENED
07:30 OBSERVATIONS RESUMED (SN2021uds)

 UTTarget 
 TypeSetup SlitExposure (s)Airmass
Seeing 
Notes
EFOSC2
        
23:58LTT7379
std
gr11-13-16
1-1.5
-
1.11.7 (DIMM)
00:14  AT2021ukc Classification gr131.5  9001.5 1.8 
 00:50 AT2021jjmFollow-up gr13 1.5 2x2700 1.2-1.4 1.8-1.6 
 02:32 AT2021vapClassification gr13  1.5 9001.6 1.9  
 02:55 AT2021ufgClassification  gr131.5  900 1.41.8 
 03.20 AT2021vciClassification gr13  1.5 1500 1.52.2 Weather quite unstable, wind and seeing increasing 
 03.55 AT2021uzpClassification gr13   6001.0  1.8 
 04.15 EG131 stdgr11-13-16    Shutter failed again on EFOSC, sequence incomplete 
         
SOFI






 
 4.40 SN2021uib Follow-up  JH  1080, 14401.52.0 
 5.35 SN2021tpf Follow-up JH  1080, 720 (6/12)
1.0
3.0
Winds picking up close to closing limit. 6/12 H exposures obtained before close at 06.00. J complete.
 7.30SN2021uds  Follow-up JHK 400, 360, 720
1.2
 2.3Observations resumed 07.30.
8.05
SN2021uds Follow-upBG1.0
3240
1.2
 1.8Longer than expected execution time pushed 2021umd out of the queue.
 09.35 Telluric std 1.0
  1.42.4
 
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