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| 21:00-03:00; Carsten: Excellent conditions: tau225~0.1, p2p <1Jy/b @2mm, but wind ~12m/s. Continuing with Orion B. Pointings every 1.5h. | 21:00-03:00; Carsten: Excellent conditions: tau225~0.1, p2p <1Jy/b @2mm, windy ~8-12m/s. Continuing with Orion B (126-22). Pointings every 1.5h. |
Daily Reports
Contents
Jan. 24th, Tuesday
16:00-21:00; Stergios: Maintenance finished around 16:00 (local time). Snowing and dense clouds prevent us from observing even with EMIR.
Weather clearing up, however ice is present on the legs and sub-reflector (18:23 UTC). Operator removed successfully the ice/snow from the antenna. DAQ started around 19:00 UTC with final measurements of 49/6/62 bad pixels for arrays 1/2/3, respectively. We continued with calibration observations on the pointing source 2251+158. A series of pointing/focus revealed some kind of astigmatism with two 'lobes' present at the final image, which might be caused from the recent stop of the de-icing. After many focus repetitions on this source the feature persisted. Eventually we moved to Uranus aiming for better calibration results. Carsten takes over. Good stability (peak-to-peak always below 3 Jy/beam) and tau around 0.2 at most times.
21:00-03:00; Carsten: De-iciung had been on till 19:00UT. Beam and Focus looked poor till about 22:00UT. Pointing and focus on Uranus OK. Skydip. calib_1scan. COSMOS started at 22:30UT. tau225~0.28 slowly improving to 0.17. El>35deg. p2p<~4Jy/b@2mm on all the hourly pointings. The COSMOS timelines did however show larger variations +-5 up to 20Jy/b. 12 scans done.
Jan. 25th, Wednesday
03:00-09:00; FXD: 2 hours on COSMOS. I did focus in between. Best is 18x19 arcsec at 2mm. p2p variations are well below +-3 Jy/b on pointing scans. Tau=0.2 stable. -10 degC. Cloudy. No Wind. 2 repeats on 199-16 PSZ2G084 before it's too high. Focus (12 and 18) OK then go to PSZ2-G046.1. 4 repeats
09:00-15:00; Antoine: 1st hour spent trying to get a good focus as the rising sun was heating the antenna: weird feature/artifact when trying to focus on K3-50A (see screenshot), then switched to NGC7027 for better focus. After that good observations of program 199-16: finished observing PSZ2-G046.1. Then switched to project 171-22 to try to wrap up the last 3 repetitions of PSZG126. Two repetitions done, but at least 1 scan was lost because the auto-tuning of the KIDS got turned off (remote connexion at around 11h55 UTC ?). Then unfortunately there was a gap in visibility with no observable projects, so time was spent pointing, focusing and calibrating on different sources until 15h. Overall quite good weather conditions: no wind, very few clouds (if any), tau ~ 0.20. And many thanks to Stergios for helping me through my first shift of NIKA2 observations.
15:00-21:00; Gustavo:
21:00-03:00; Carsten: Excellent conditions: tau225~0.1, p2p <1Jy/b @2mm, windy ~8-12m/s. Continuing with Orion B (126-22). Pointings every 1.5h.
Jan. 26th, Thursday
03:00-09:00; FXD:
09:00-11:00; Antoine:
11:00-17:00; 087-21:
17:00-21:00; Gustavo:
21:00-03:00; Carsten:
Jan. 27th, Friday
03:00-09:00; FXD:
09:00-15:00; Antoine:
15:00-21:00; Gustavo:
21:00-03:00; Carsten:
Jan. 28th, Saturday
03:00-09:00; FXD:
09:00-15:00; Antoine:
15:00-21:00; Gustavo:
21:00-03:00; Carsten:
Jan. 29th, Sunday
03:00-09:00; FXD:
09:00-15:00; Antoine:
15:00-21:00; Gustavo:
21:00-03:00; Carsten:
Jan. 30th, Monday
03:00-09:00; FXD:
09:00-15:00; Antoine:
15:00-21:00; Gustavo:
21:00-03:00; Carsten: