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| 16:30-21:00; Angel: Rainy and foggy after the weekly maintenance. Slight snowfall. The atmosphere was quite unstable after that, but mean tau has continuously dropped; still being unstable. Preparing setup for NIKA2. 21:00-03:00; Stergios, Angel: Unfortunately, tau raised above 1 at the beginning of the shift; still being unstable. At ~02h tau dropped up to ~0.7, with clear signs of relative atmospheric stability. DAQ of NIKA2 was started at 02:30 using the run72.ini file ('old sweep': see Monday's report: https://publicwiki.iram.es/DailyReportsNika2Pool101022) in order to check the instrument, main scripts, and quick data reduction before the science observations. Best of resonances (on-sky) gave the following bad/total KIDs relations: 138/1055 (Ar1), 123/573 (Ar2), 88/1056 (Ar3). |
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| 03:00-09:00; Quang, Stergios, Angel: We carried out some tests with NIKA2, starting with a small pointing session (110 < Az. < 305 deg., 32 < El < 71 deg.) after a good focus. Pointing corrections, averages and rms are given in the table below. ||'''Source'''||'''Azimuth'''||'''Elevation'''||'''tau_225GHz'''||'''Azimuth'''||'''Elevation'''|| ||3C454.3|| 304.49|| 32.63|| 1.00|| 4.80|| 1.00|| ||3C454.3|| 260.17|| 39.15|| 0.76|| -4.50|| -2.40|| ||Uranus|| 261.04 || 38.18|| 0.72|| 0.10|| -3.30|| ||Uranus|| 173.19 || 69.57|| 0.74|| -1.30|| -0.30|| ||Uranus|| 212.62 || 66.66|| 0.79|| -1.90|| 3.20|| ||Uranus|| 178.88 || 71.11|| 0.68|| -2.60|| 3.40|| ||Uranus|| 235.49 || 59.20|| 0.90|| -2.10|| 3.20|| ||Mars || 182.77 || 69.65|| 0.69|| -3.80|| 0.70|| ||Mars || 110.36 || 60.85|| 1.17|| -3.10|| -1.40|| ||HLTAU || 213.86 || 54.96|| 0.69|| -0.50|| 0.50|| ||'''Total average'''|| || || '''0.814''' || '''-1.34''' || '''0.17'''|| ||'''Total rms'''|| || || || '''2.62'''|| '''2.37'''|| A couple of calib_1scans on Uranus was obtained (20221012s20 and s42), as well as a skydip (s32). Atmosphere instabilities increased gradually during this test session. Regarding telescope and instrument, everything seems to be ready for starting the observations. At 05:50 we switched to EMIR. At about 06h and up to the end of the shift, Quang observed on behalf of the EMIR backup project 051-22. The tau from taumeter fluctuated a lot from 0.6 to 1.7. Tau at ~100 GHz from MRTCAL was stable: ~0.1. 09:00-15:00; Matthieu (on hold), Angel: Mean opacity was about 0.6 and 1.2 over the shift. Project D02-22 was observed with EMIR-E0 (6 reps. on LH206718 and 4 reps. on LH93597). Noncompatible opacity for EMIR-EO observations (Wsw) after ~12:45. We parked the telescope at ~13:00. Dense fog and light rain after that. 15:00-21:00; Gianluca (on hold): Bad weather, telescope stopped. 21:00-03:00; Angel: Opacity dropping to ~0.7, relatively stable. Continuing with EMIR backup programs, waiting for a qualitative improvement. Starting observations with 1 rep. on field C3, setup 1, project 018-22. Tuning with setup 2. One rep. on the fields C1, C2, and C3. Mean tau_225GHz was about 0.75 with some noticeable spikes, despite tau at ~100 GHz from MRTCAL being < 0.25 (=> pwv < 8 mm in the line of sight). Switching to project 043-22 at ~02:30 for observing the pre-stellar core L1544. |
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03:00-09:00; Quang: Today, as part of the NIKA2 pool, I observed project 043-22 using EMIR. The tau from taumeter was quite good for that: 0.5 to 0.8. 09:00-03:00; Guilaine: |
Daily Reports
Contents
Oct 11th, Tuesday
16:30-21:00; Angel: Rainy and foggy after the weekly maintenance. Slight snowfall. The atmosphere was quite unstable after that, but mean tau has continuously dropped; still being unstable. Preparing setup for NIKA2.
21:00-03:00; Stergios, Angel: Unfortunately, tau raised above 1 at the beginning of the shift; still being unstable. At ~02h tau dropped up to ~0.7, with clear signs of relative atmospheric stability. DAQ of NIKA2 was started at 02:30 using the run72.ini file ('old sweep': see Monday's report: https://publicwiki.iram.es/DailyReportsNika2Pool101022) in order to check the instrument, main scripts, and quick data reduction before the science observations. Best of resonances (on-sky) gave the following bad/total KIDs relations: 138/1055 (Ar1), 123/573 (Ar2), 88/1056 (Ar3).
Oct 12th, Wednesday
03:00-09:00; Quang, Stergios, Angel: We carried out some tests with NIKA2, starting with a small pointing session (110 < Az. < 305 deg., 32 < El < 71 deg.) after a good focus. Pointing corrections, averages and rms are given in the table below.
Source |
Azimuth |
Elevation |
tau_225GHz |
Azimuth |
Elevation |
3C454.3 |
304.49 |
32.63 |
1.00 |
4.80 |
1.00 |
3C454.3 |
260.17 |
39.15 |
0.76 |
-4.50 |
-2.40 |
Uranus |
261.04 |
38.18 |
0.72 |
0.10 |
-3.30 |
Uranus |
173.19 |
69.57 |
0.74 |
-1.30 |
-0.30 |
Uranus |
212.62 |
66.66 |
0.79 |
-1.90 |
3.20 |
Uranus |
178.88 |
71.11 |
0.68 |
-2.60 |
3.40 |
Uranus |
235.49 |
59.20 |
0.90 |
-2.10 |
3.20 |
Mars |
182.77 |
69.65 |
0.69 |
-3.80 |
0.70 |
Mars |
110.36 |
60.85 |
1.17 |
-3.10 |
-1.40 |
HLTAU |
213.86 |
54.96 |
0.69 |
-0.50 |
0.50 |
Total average |
|
|
0.814 |
-1.34 |
0.17 |
Total rms |
|
|
|
2.62 |
2.37 |
A couple of calib_1scans on Uranus was obtained (20221012s20 and s42), as well as a skydip (s32). Atmosphere instabilities increased gradually during this test session. Regarding telescope and instrument, everything seems to be ready for starting the observations. At 05:50 we switched to EMIR. At about 06h and up to the end of the shift, Quang observed on behalf of the EMIR backup project 051-22. The tau from taumeter fluctuated a lot from 0.6 to 1.7. Tau at ~100 GHz from MRTCAL was stable: ~0.1.
09:00-15:00; Matthieu (on hold), Angel: Mean opacity was about 0.6 and 1.2 over the shift. Project D02-22 was observed with EMIR-E0 (6 reps. on LH206718 and 4 reps. on LH93597). Noncompatible opacity for EMIR-EO observations (Wsw) after ~12:45. We parked the telescope at ~13:00. Dense fog and light rain after that.
15:00-21:00; Gianluca (on hold): Bad weather, telescope stopped.
21:00-03:00; Angel: Opacity dropping to ~0.7, relatively stable. Continuing with EMIR backup programs, waiting for a qualitative improvement. Starting observations with 1 rep. on field C3, setup 1, project 018-22. Tuning with setup 2. One rep. on the fields C1, C2, and C3. Mean tau_225GHz was about 0.75 with some noticeable spikes, despite tau at ~100 GHz from MRTCAL being < 0.25 (=> pwv < 8 mm in the line of sight). Switching to project 043-22 at ~02:30 for observing the pre-stellar core L1544.
Oct 13th, Thursday
03:00-09:00; Quang: Today, as part of the NIKA2 pool, I observed project 043-22 using EMIR. The tau from taumeter was quite good for that: 0.5 to 0.8.
09:00-03:00; Guilaine:
Oct 14th, Friday
Oct 15th, Saturday
Oct 16th, Sunday
Oct 17th, Monday