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Daily Reports

Contents

  1. Daily Reports
    1. Oct 20th, Tuesday
    2. Oct 21th, Wednesday
    3. Oct 22th, Thursday
    4. Oct 23rd, Friday
    5. Oct 23th, Friday
    6. Oct 24th, Saturday
    7. Oct 25th, Sunday
    8. Oct 26th, Monday
    9. Oct 27th, Tuesday
    10. Oct 28th, Wednesday
    11. Oct 29th, Thursday
    12. Oct 30th, Friday
    13. Oct 31st, Saturday
    14. Nov 1st, Sunday
    15. Nov 2nd, Monday
    16. Nov 3rd, Tuesday

Because of the pandemic, no observers can come to the telescope. This pool is entirely in remote. First Pool week: Nicolas Ponthieu, Alexandre Beelen, Juan Macias, Laurence Perotto, Florian Kéruzoré, Stavroula Katsioli, Hélène Roussel, Florian Ruppin. A new sweep was performed.

Oct 20th, Tuesday

High winds with gusts up to 40m/s

Oct 21th, Wednesday

With hail!

No observation could be performed so far.

Oct 22th, Thursday

It's even raining in Granada. No observations.

Oct 23rd, Friday

Morning shift:

We can start the observations, the opacity is excellent and the weather is much better, but we can't start science because we lack a beammap to reduce data. NP, AB and BL perform observation of Venus with NP reducing the beammaps successfully. Grenoble is warned about the presence of the beammaps, but the quicklook with PIIC won't be ready before Monday. The IDL pipeline is used instead!

We let the weather slowly stabilize until we can finally start observations after the sunset. Opacity throughout the evening: ~0.2

LPSZ starts science for this pool (ACT-CL-J0223)! ...

Oct 23th, Friday

03h00 - 09h00; Stavroula and Hélène: After the end of the project 199-16, we observed IMEGIN targets NGC628, NGC925 and NGC2841. Opacity had values under 0.25 and the conditions were stable. Box S in array 3 has been missing for all observations so far (not clear whether it's been lost in the new sweep, or if it can be recovered with a new beammap).

During the morning shift it was observed the project 074-20 and 077-20.

Source of 077-20 is 5 degrees from the sun and while it did not hurt the science observations for a while, it ended up dramatically changing the beam parameters for the worse. So we let the antenna relax in front of M16 (029-20)

Oct 24th, Saturday

03h00 - 09h00; Stavroula and Hélène: After the end of the project 199-16, we observed IMEGIN targets NGC628, NGC925, NGC2841, NGC2976, and 037-20 after that. Opacity had values below 0.20.

21h00 - 03h00; Laurence: Opacity starts around 0.3 and continuously drops during the shift. We started with observations of a source at high elevation for 039-20 at tau~0.25 and continued observing until the source was too high. After a focus-pointing sequence on Uranus, we did a calib_1scan, which will be useful for the absolute calibration. Then, around 00:00 UT, we moved on to LP-SZ. We observed PSZ2G155 until it was at an elevation as low as 40 degrees and then, we picked ACT-CL-J0240 just after the transit at el > 50deg

Oct 25th, Sunday

03h00 - 09h00; Stavroula and Hélène: Good weather, opacities around 0.2. Observed N628 (briefly), N925, N2841 and N2976 for project 160-16. Should keep integrating on these targets until desired sensitivity achieved. A calib_1scan on Uranus and skydip

21h00 - 24h00; Florian K.: Started the run with observations of secondary calibrators (MWC349, NGC7027, CRL2688). Continued with observations of 039-20 (HD15745).

Oct 26th, Monday

03h00 - 09h00; Stavroula and Hélène: Bad weather, no observations.

00h00 - 03h00; Florian K.: Had to stop because of the strong opacity jump.

15h00 - 21h00; Ángel: Opacity about 0.15-0.20. Observed 6 reps. of G82 (007-20) and 1 rep. of HD143894 (039-20).

21h00 - 24h00; Florian K.: Started the run with 007-20 (one execution of observe_G82 to complete the target). Ran the secondary calibrators (MWC349, NGC7027, CRL2688). Observed 199-16 (two repetitions of observe_PSZ2G155 to complete the target). Made a beammap on Uranus at tau_225=0.18, el=60deg (20201026s217).

Oct 27th, Tuesday

00h00 - 03h00; Florian K.: Together Ángel performed a pointing session from 23:15 to 01:15 (UT) - 61 raw sources. Went back to 199-16 for a repetition of observe_ACTJ0240.

03h00 - 09h00; Stavroula and Hélène: Opacities between ~ 0.3 and 0.5. Observed IC443G for project 037-20. Toward the end of the shift, opacities are quickly rising and conditions degrade. Note in TAPAS for 037-20 that the latest scans may be unusable and should be checked. Desired total integration time not yet achieved. A calib_1scan on Uranus and skydip were carried out.

08h00 - 09h30; Matthieu: Stopped at 09h00 because of high opacity. Maintenance works since then.

16h00 - 21h00; Ángel: High opacity (0.7<tau<1, strong instability). Switching to EMIR at ~18h for stability monitoring. Backup observations with EMIR (project 073-20) with slow opacity decreasing. Resuming with NIKA2 at ~21h00.

21h00 - 24h00; Miren, Jean-François & Juan: Pretty bad weather. Opacity at about 0.6. We observed 029-20 following Bilal instructions.

Oct 28th, Wednesday

00h00 - 02h00; Miren, Jean-François & Juan: Pretty bad weather. Opacity at about 0.6. We observed one more hour for 029-20 following Bilal instructions until source too low. Stopped since ~02h because of high opacity.

03h00 - 09h00; Stavroula and Hélène: Weather degrades again, with opacities well above 0.4 and unstable atmosphere.

No observations15h00; F-Xavier Désert: opacity at 0.6 (but decreasing). Backup observations with EMIR (Mónica: project 153-19). We start observing with NIKA2 at 17 UT. Lots of anomalous refraction, going on and off. Moving to different pointing sources to get a decent focus.

21h00; Jean-François, Miren, Juan: relative good weather opacity around 0.3->0.2. Started observing MOO (Ruppin et al) and XXL clusters (Ricci et al). Good beammap on Uranus at around El.=0.60 and opacity 0.3. We observe since yesterday that box 13 is fully flagged by nk_rta, this should be investigated.

Oct 29th, Thursday

00h00 - 03h00; Jean-François, Miren, Juan: We observe ACTJ0240 for LPSZ project 199-16

03h00 - 09h00; Isabelle and Karine (assisted by Juan): We have been observing for our project 007-20 the following sources: L1506 and G150. Everything was fine, with good weather conditions :) We have commented on the scans in TAPAS indicating which ones should have been taken on nikas-20 account (pointing, focus, and skydip). Hopefully, we will not do the same mistake tomorrow.

09h00 - 03h00; Guilaine: starting the shift with opacity below 0.2; COSMOS field (192-16) and id34 (075-20) observed. Opacity increasing above 0.3, with added instability.

15h00 - 21h00; FXD: opacity at 0.35 and rising. Lots of turbulence. Stay tuned. Handover to EMIR for a while. Backup observations with EMIR (Mónica: project 153-19). Resuming with Marco at 20h. Start 077-20 project on MOOJ0105.

21h00 - 24h00; Laurence and Jean-François: opacity stabilizing around 0.23. We observed 039_20, after a calib_1scan on Uranus, right after a focus-pointing sequence

Oct 30th, Friday

00h00 - 03h00; Laurence and Jean-François: opacity continued being stable around 0.23, while TOI showed large variations (hint of atmospheric instabilities ?); pointings yielded nice profiles and no indication of anomalous refraction (no shift between the scan in one direction and the scan backward). We observed 199-16 GT program. And finished the shift with a skydip and a calib-1scan on Uranus. We returned the antenna to the next team after pointing & focus.

03h00 - 09h00; Isabelle and Karine: starting shift with opacity ~0.2. We observed targets G150 and L1506 (007-20). After that, we mapped the GRB201024 region as requested in the project D04-20, with a mean tau~0.3 (and increasing). Then, we observed TMC1-C (above El. 24 deg.) of project 006-20. Apart from standard pointing and focus calibrations, two calib_1scan on Uranus and one skydip were launched. Finishing with opacity ~0.35.

09h00 - 15h00; Nicolas: 10h30: After small set up issues, because the opacity is still above 0.3 and increasing, we have switched to project 061-20 whose tau constraints are compatible with the current weather. Thanks to Angel's help in setting up scripts and paths, after a focus and pointing sequence, I'm completing right now the 3rd round of requested observations on JINGLE10. 12h02: Going to 1226+023 to have a pointing-focus source close to JINGLE184. The pointing gives rather large corrections but the beams are nice, hence no need to refocus. I produced the script observer_JINGLE184.pako from observer_JINGLE10.pako as it was missing and just launched it. 13h10: the telescope stopped for an unknown reason after the 1st loop on JINGLE184 (i.e. scan stuck). Angel and Sergio are working to solve the issue. Meanwhile, tau has kept increasing, so we decide to switch to EMIR.

14h30; Angel: the telescope responds again. Monitoring NGC7027 using EMIR: pwv~8 mm. Waiting for field rising of the backup EMIR project 153-19 (Mapping the North America Nebulae).

15h00 - 24h00; Mónica: Observing for project 153-19 until 18:30. Then, changed to the backup EMIR (3mm) project 011-20 (observation of starless-cores). OTF-maps on 1333-C1-1, B213-C5-1, B213-C6-1, B213-C7-1, and B213-C10-1. 0.45 < Tau_225Ghz < 0.55

On-hold to observe with NIKA2:

Oct 31st, Saturday

00h00 - 03h00; Wonju: Continuing 011-20. OTF-maps on B213-C10-10 and B213-C16. 0.47 < Tau_225Ghz < 1.48

03h00 - 05h15; Angel: Continuing 011-20. OTF-maps on B213-C10-10 and B213-C16. 0.65 < Tau_225Ghz < 0.95. Project 011-19 finished. No additional sources of backup EMIR (3 mm only) projects above the horizon until ~13h.

05h30 - 12h45; From taumeter, 0.7 < Tau_225Ghz < 0.87.

12:45 - 18h00; Monica: Start observing for backup EMIR project 153-19. Target fields at El. ~22 deg. when the instrument setup was launched.

18h00 - 21:40; Miguel: Observing source 919B of backup EMIR project 073-20. Tau_225GHz < 0.7 with spikes of +/-0.15.

21h40 - 24h00; F-Xavier: observations resume with NIKA2 at 21h30. After tuning the resonances, go to project 029-20 as opacity is above 0.6 but conditions are rather stable.

On-hold to observe with NIKA2:

Nov 1st, Sunday

00h00 - 03h00; F-Xavier: Go to project 006-20 after calibration on Uranus. One hour on each, TMC1-CP and TMC1-C.

03h00 - 09h00; Angel: Continuing at project 006-20. One hour on each, TMC1-CP and TMC1-C. Quite good beam sizes from pointing on Uranus and 0439+60: <FWHM>_1mm,2mm = 11.6,17.7 arcsec. Pointing corrections/beam widths from PIIC-QL (updated DAFS) and the IDL pipeline were consistent within ~0.2 arcsec. Mean tau_225GHz before sunrise:

09h00 - 15h00; Longji:

15h00 - 21:00; F-Xavier:

21h00 - 24h00; Florian K:

Nov 2nd, Monday

Nov 3rd, Tuesday