|
Size: 3421
Comment:
|
Size: 3465
Comment:
|
| Deletions are marked like this. | Additions are marked like this. |
| Line 25: | Line 25: |
| On the very variable thick clouds, we notice a very different response of Ar1 and Ar3 to sky noise (variations), the latter having a bkg few times higher than the former (compare the y-axis scales): <<BR>> | On the very variable thick clouds, we notice a very different response of Ar1 and Ar3 to sky noise (variations), the latter having a bkg few times higher than the former (compare the y-axis scales). Flux calibration problems in the old DAFs?: <<BR>> |
Back to the NIKA2 Run 75 main page
Contents
NIKA2 Re-Commissioning (4th. attempt)
NIKA2 run 75, Cryo run 87
Oct. 13, 2025
14:00-17:00; Martino, Alessandro, Dave, Angel: a new sweep was performed. Previous initialization file: run87_old.ini. Bad/total KIDs counts (cryo window closed) after sweep (Ar1, Ar2, Ar3): 9/1000, 8/574, 4/1013. New file in force: run87_new.ini. Files run87_new_tp.ini and run87_new_pol.ini were also created. See nika2-a:~/nika_V3_IRAM.ini.
Oct. 14, 2025
We rename the ini files:
run87.ini (active file)
run87_old.ini (OLD active file, not used in August)
run87_newSweep_tp.ini
run87_newSweep_pol.ini
run87_oldSweep_tp.ini
run87_oldSweep_pol.ini
@15:00 LT we start, after preparing the whole "NIKA2 week environment architecture: 15/8/55 lost KIDs in Ar 1,2,3. Unstable sky and thick clouds coming from the N. We're entering in the peak of the tau forecast. It will be better later this evening. Meanwhile we try to focus. The old make-imbf script does not produce the imbfits files. Angel contacts Albrecht to solve the issue. The new make-imbf produces the file regularly.
On the very variable thick clouds, we notice a very different response of Ar1 and Ar3 to sky noise (variations), the latter having a bkg few times higher than the former (compare the y-axis scales). Flux calibration problems in the old DAFs?:
Focus sequences
Scan nr
Target
Ar2
Ar1
Ar3
Notes
20251013s133-136
1641+399
3C345, bad sky, the Ar2 focus curve is funny
138-...
1633+382
Forget it, 100 Jy sky variations
Beam maps
Scan Nr
Target
Focus
Notes
Calibrators
Scan Nr
Target
Focus
Notes
Scan Nr
Target
Focus
Notes