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| 15:00-00:25, 10th IRAM 30m School - Observing slots of Working Groups III (4.5h lost: sub-reflector mounted without servo-amplifiers; then, a failure appeared in the local oscillator box of EMIR-E0: solved by SN) & II (observing OK with NIKA2). | 15:00-00:25, 10th IRAM 30m School - Observing slots of Working Groups III (4.5h lost: sub-reflector mounted without servo-amplifiers; then, a failure appeared in the local oscillator box of EMIR-E0: solved by SN) & II (observing OK with NIKA2: A calib_1scan on Uranus [20211116s179] and a skydip [s181], project s02-21). |
Daily Reports
Because of COVID-19, only IRAM staff is allowed to observe on-site until new notice.
Contents
Nov 15th, Monday
19:30-24:00, 10th IRAM 30m School - Observing slot of Working Group IV. Observers: Ioannis & Carsten. Aside from observing a nearby galaxy, we did several calib1 scans on Uranus and a Skydip. Weather conditions were good, stable (tau225~0.15).
Nov 16th, Tuesday
15:00-00:25, 10th IRAM 30m School - Observing slots of Working Groups III (4.5h lost: sub-reflector mounted without servo-amplifiers; then, a failure appeared in the local oscillator box of EMIR-E0: solved by SN) & II (observing OK with NIKA2: A calib_1scan on Uranus [20211116s179] and a skydip [s181], project s02-21).
Nov 17th, Wednesday
00:35-03:00, Angel: Restarting acquisition, cryo run 68. Opacity below 0.2. Stable. Imbfits creation restarted twice: OK. Pointing/focus on W3OH. Three repetitions on PSZ2G141 (project 199-16).
A timelapse of Manuel Castillo Fraile from this morning:
03:00-09:00, Nicolas Ponthieu on shift. Starting with Angel and Sergio, telescope focused, pointing on Uranus, beam map (20211117s28), calib_1scan (s29), skydip (s30), then one rep of 199-16/PSZ2G141 to complete, then 192-16/cosmos until 9am with focus/pointing around 5h50 and 8h10. The night went smoothly.
09:00-15:00, Angel, Gianluca (invited for further observing training): Opacity around 0.2 about the first third of the shift. 192-16/cosmos continued for ~1h. Then, we got 1.5 reps. on AK4-224 cluster (084-21) with tau225 = 0.20 to 0.25. Some instabilities appeared after that, with opacity increasing from 0.3 to 0.4. Acquisition restarted at 48 Hz at 12h (UT; starting from scan 20211117s124) and 2 reps. were obtained on cluster A1835 of ARSENAL sample (086-21). A broadening of about 1-2 arcsec in the beam size with the best focus correction was observed at the last part of the shift. NIKA2 observations stopped after a calib_1scan on Mars (20211117s141; broadened beam) skydip (s143).
15:00-00:00, 10th IRAM 30m School - Observing slots of Working Groups I and V (everything OK). At the end of the 2nd slot, Working Group V (orange) obtained calib_1scan on NGC7027 (20211117s232), CRL2688 (s233), MWC349 (235) after pointing/focusing on the first source. Then, a beam map on 2251+158 (s244).
Nov 18th, Thursday
00:00-03:00, Angel: Starting the mini-shift with opacity about 0.2, stable. Two reps. done on pre-stellar core 1390 (007-21). Then, 2 reps. on NGC1333-C2 (010-21); <tau225> about 0.3 at the end.
03:00-09:00, Alexandre Beelen on shift, starting with Angel, telescope focused and pointed, one repetition on NGC1333-C2, pointing, 3 rep on NGC1333-C2, switched to 045-21, weather to variable tau not well fitted, pointing, bloc on GP212_3*, stop after 3 scans due to high wind, restarted, pointing 1 scan on GP212_3*, stop because of snow at 07h (LT).
09:00-15:00, Angel: Observations resumed at 12:40 (LT). Opacity about 0.25, but unstable sometimes according to the variations of pointing/focus baselines at 2 mm. More stable after 13:00. Two repetitions (= 4 scans) on NGC3938 (IMEGIN) before opacity increasing. Acquisition restarted at 48 Hz at 14:10 for changing to ARSENAL targets. Very unstable around 14:30, according to several pointing attempts. Stopped at 14:45, looking at the beginning of the first backup observing slot (with EMIR) on behalf of the 10th IRAM School.
15:00-00:00, 10th IRAM School - Observing slot of Working Group III (conducted by Mónica). Observing until 22:20. Telescope parked. Wind gusts (20-21 m/s) and light hail.
Nov 19th, Friday
Telescope stopped. Strong wind, hail.
Nov 20th, Saturday
19:00, the telescope is still stopped. Wind speed has dropped dramatically over the last night; cloudiness has increased. Snowing. Below is the evolution of the tau225 records and the forecast for Nov. 21st (from https://weather.iram.es):
Nov 21st, Sunday
Nov 22nd, Monday