Daily Reports
Contents
Feb 8th, Tuesday
15:45-21:00; Angel: DAQ started and tuning with 48/7/54 bad KIDs for ar1/ar2/ar3. No evidence of correlated spikes in the noise spectra for all arrays. Tau(225 GHz) between 0.20 and 0.25 throughout the shift with some spikes. Pointing on Uranus (1.5, -11.6), larger in elevation than expected. NIKA2 mirrors deployment re-checked. Best focus -1.0 mm. Pointing corrections are stable at this position. Beam sizes: 12.9"/18" because of a slight ellipticity; beam shapes were quite reasonable. Good atmosphere stability: ~2 Jy/b at 2 mm. Checking pointing corrections (6 values) in ~70 < Az. < 120 deg, and ~45 < El. < 70 deg. We get corrections <Az.> = 3.2 +/- 1.4 and <El.> = -8.9 +/- 3.0. Refocusing and checking stability (~1-2 Jy/b at 2 mm). Science observations started with project 110-21 (2 reps. on NGC1333-C7). Then, 2 reps. on B213E (GASTON). Even more stable after sunset. The shift was finished with the observation of target WB89-793 of project 137-21. Stuck scans: 20220208s122 and s159.
21:00-03:00; Longji: We start the shift with a series of pointing, focus, and calibration scans on Uranus and a skydip [Beammap on Uranus: 20220208s191; calib1scan: s192; skydip: s193]. After that we made 2 repetitions on NGC3938 for IMEGIN (160-16). We started observation on COSMOS for N2CLS (192-16) at midnight. The opacity from the tau meter was slightly spiky at the beginning of the observation but became stable after 23:00, with values of ~0.23. The beam and focus were also stable throughout the shift.
Feb 9th, Wednesday
03:00-09:00; Corentin: Started with pointing on 1055+018, 2 reps on COSMOS project (little glitch of the tau for one scan) and finally another pointing. Moving to project nikaw-21 --> skydip [20220209s25] on 1418+546 because of the burst of opacity but then tau stayed stable ~0.23. Moving to project 199-16, pointing on 1418+546 and 6 reps on PSZ2G087 (18/24 --> 24/24 COMPLETED). Focus on 1633+382 and then 2 reps on PSZ2G084 (16/22 --> 18/22). [Retuning at 07:30: bad KIDs 36/5/41 for ar1/ar2/ar3]. Last pointing and moving on PSZ2G084 because it was the closest from the pointing source: 1 rep (18/24 --> 19/24) and I launched another rep but there was a failure with array 2 so the scan was canceled (need to update the README and put 19/24 instead of 20/24). [At 08:50 the arr2 crate went down suddenly; ./control.py 192.168.1.160 crateColdReboot didn't work. Crate 2 restarted from PSE538: OK. DAQ restarted, retuning: bad KIDs 41/5/49 for ar1/ar2/ar3. Resuming observations].
09:00-15:00; Julien: Shift started by a technical issue with the array 2, followed by a power problem, all quickly solved (by 8:20 UTC). First project was nikaw-21 project toward NGC7027 (pointing, focus) to do calib_1scan on NGC7027, MWC349, and CRL2688 [scans 20220209s86, s87, and s88]. Good conditions, very stable (<2 Jy/beam peak-to-peak baseline variations and tau ~0.2). Moving to project 109-21. Several focus/pointing on 1757-240 to get a good beam, 1 repetition of B68 observation blocks, already getting low. Back to nikaw-21, doing poiting/focus/calib_1scan on Mars [s126]. Pointing/focus on 1749+096. Changing to project 109-21, pointing on 1923+210, then 2 repetitions on source L694-2, 1 pointing, 1 more repetition on L694-2. Opacity increases to ~0.4, so moving to project nikaw-21, trying to do pointing/focus on NGC7538. Repeated difficulties (too large and elongated beams), probably related to unrelaxed antenna which is likely to be heated by the Sun considering the clear weather.
Feb 10th, Thursday
Feb 11th, Friday
Feb 12th, Saturday
Feb 13th, Sunday
Feb 14th, Monday