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Daily Reports (2026/02/24 - 03/03 NIKA2 run 79, Cryo run 91)

Observers on-site: Felipe Alves, Shixian Mo, Miren Muñoz, Li Yingxi.

Astronomer on Duty: Stefano Berta
Pool Manager: Angel Bongiovanni

Operators: Pedro (day), Ioaquin (night)

Organization of shifts:
22:00-04:00 LT: Miren
04:00-10:00 LT: Felipe
10:00:16:00 LT: Li
16:00-22:00 LT: Mo

Important

Focus offsets shall be measured on Ar1
Pointing offsets shall be measured on Ar2

Pool-Account usage: Accounting of observing times

• Calibration observations like pointing, focus, and calib_1scan (the latter in case of NIKA2-Pol only, aimed at characterizing the instrumental polarization) which are conducted before and during project observations are part of the project time. Note that all proposals include such overheads in the time and sensitivity estimates. This holds for total power and polarimetry observations.

• Other calibration observations which are important for all projects like beam maps, skydips, or calib_1scan for absolute flux calibration may be accounted under the pool account (nikaX-YY, where X = s,w and YY = year ; nikaw-25 in this case).

• When conditions are unstable and it is unclear whether project observations make sense at all, calibrations may be accounted to the pool account.

Focus and Beam maps accounting

Please fill the Table with the Ar1,2,3 focus values as follows. At best, make one table per day.

• Focus sequences (NOTE: Ar2 is very noisy and this might influence the A2 focus value)
  Scans nr.	Target	Ar2	Ar1	Ar3	Pol?	Notes
  20260224s75-79	Uranu	out	0.65	0.90	yes

Similarly, if any beam maps (total power or polarimetry) are taken:

• Beam maps
  Scan Nr	Target	Focus	TP (99 subscans) or Pol (95 subscans)	Notes

Tuesday, 24th February 2026

@09:30 UT the team arrived safely at the observatory

@9:30-14:00 UT: Maintenance time

@15:30-22:00 LT Mo + everyone

• we start the NIKA2 operations, with polarimetry; lost KIDS 5/15/22. The 1.5 Hz peak in the pow spec (see last week) is still there.
• training all together
• 156-25 one repetition of N68

@22:00-04:00 LT

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Wednesday, 25th February 2026

04:00-10:00 LT

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10:00-16:00 LT

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16:00-22:00 LT

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22:00-04:00 LT

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Thursday, 26th February 2026

04:00-10:00 LT

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10:00-16:00 LT

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16:00-22:00 LT

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22:00-04:00 LT

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Friday, 27th February 2026

04:00-10:00 LT

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10:00-16:00 LT

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16:00-22:00 LT

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22:00-04:00 LT

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Saturday, 28th February 2026

04:00-10:00 LT

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10:00-16:00 LT

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16:00-22:00 LT

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22:00-04:00 LT

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Sunday, 1st March 2026

04:00-10:00 LT

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10:00-16:00 LT

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16:00-22:00 LT

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22:00-04:00 LT

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Monday, 2nd March 2026

04:00-10:00 LT

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10:00-16:00 LT

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16:00-22:00 LT

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22:00-04:00 LT

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Thuesday, 3rd March 2026

04:00-10:00 LT

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