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| 03:00-09:00, Still stopped. Wind speed has dropped dramatically over the last night, as cloudiness has increased. Relative humidity at 100%. Below is the evolution of the tau225 records and the forecast for the next hours: <<BR>> | 03:00-09:00, Still stopped. Wind speed has dropped dramatically over the last night, as cloudiness has increased. Snowing. Below is the evolution of the tau225 records and the forecast for the next hours: <<BR>> |
Daily Reports
Because of COVID-19, only IRAM staff is allowed to observe on-site until new notice.
Contents
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).
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
03:00-09:00, Still stopped. Wind speed has dropped dramatically over the last night, as cloudiness has increased. Snowing. Below is the evolution of the tau225 records and the forecast for the next hours:
Nov 21st, Sunday
Nov 22nd, Monday