Daily Reports (2025/11/18-25, NIKA2 run 76, Cryo run 88)
Observers on-site: Tuan-Anh Duong, Fengwei Xu, Benedetta Kalemi, Sihan Jiao
Astronomer-of-Duty, Pool Manager: Ioannis Myserlis
Operators: Joaquín Santiago, Mario Cervera
Preparatory notes
Please, remember to use the focus value of Ar1 (roughly Ar2 + 0.65 mm, but use directly the focus Ar1 monitor if possible).
Please fill the Table with the Ar1,2,3 focus values as follows. At best, make one table per day.
Focus sequences
Scan nr
Target
Ar2
Ar1
Ar3
Polarized?
Notes
Similarly, if any beam maps are taken:
Beam maps (99 sub-scans)
Scan Nr
Target
Focus
Notes
November 18th, 2025, Tuesday
Focus sequences
Scan nr
Target
Ar2
Ar1
Ar3
Polarized?
Notes
70 -74
MWC349
0.22
0.87
1.08
No
Custom script. Start at 1mm. good fitting for ar1, ar 2 and ar3
75 -79
MWC349
0.10
0.72
1.00
No
Custom script. Start at 0.9mm. good fitting for ar1, ar 2 and ar3
81 -85
2251+158
0.05
0.80
1.00
Yes
Custom script. Start at 0.75mm. good fitting for ar1, ar 2 and ar3
97 -101
2251+158
0.41
1.20
out
Yes
Custom script. Start at 0.8mm. good fitting for ar1, and ar 2 but not ar3
102-106
2251+158
0.35
1.07
1.28
Yes
Custom script. Start at 1.2mm. good fitting for ar1, ar 2 and ar3
119-123
2251+158
0.36
1.01
1.24
No
Custom script. Start at 1.1mm. good fitting for ar1, ar 2 and ar3
15:30-18:00 Ioannis : Maintenance finished on time and start directly with NIKA2 observations. ~ 1hr of NIKA2 observations training with new observers (and the ones that want to refresh their memory). Started with NIKA2 total power to check stability. Tuning looks good (12/5/21 bad kids for Ar1/2/3) and pointing plus focus look consistent and stable. Sky looks stable (~ 1.5 - 2 Jy/beam at 2mm) and we decide to change to NIKA2-Pol (8/4/39 bad kids on Ar1/2/3). Start of project 084-25. Pointing, focus and calib_1scan (20251118s88) on 3C454 (2251+158), which has similar elevation with selected target (IRAS23151). Tried to do 1 rep on IRAS23151 but fog came fast and light snow started as well, so we stopped until weather gets better.
18:00-00:00 Sihan : @ 19:10 the weather is better, have a try. Sky is stable ( < 2 Jy/beam at 2mm). Restart of project 084-25. Pointing, focus and calib_1scan (20251118s107) on 3C454. 1 repetition on IRAS23151. After the scientific observation, calib_1scan (20251118s117) on 3C454. @ around 21:25 switch to total power for project 066-25.Sky is stable ( < 2 Jy/beam at 2mm). Pointing and focus on 3C454, calib_1scan on CRL2688 (20251118s125). Do skydip @ 23:55 (20251118s135).
November 19th, 2025, Wednesday
Focus sequences
Scan nr
Target
Ar2
Ar1
Ar3
Polarized?
Notes
119-123
2251+158
0.36
1.01
1.24
No
Custom script. Start at 1.1mm. good fitting for ar1, ar 2 and ar3
00:00-06:00 Tuan-Anh :
06:00-12:00 Fengwei :