Overview of pointing sessions and resulting changes of pointing model with NIKA2:

==== 2016 January 27th: ====

21 pointing scans used, starting from current EMIR pointing model with zero Nasmyth offsets. The rms is reduced from 7.5" to 2.0" by following new Nasmyth offsets:
|| P10    || P11    ||
|| +27.42" || -6.39"||

Implemented since January 27th, scan 184 (JP).

Observed pointing scatter and residuals after fit:

{{attachment:160127_scatter.png||height=300}}


==== 2015 October 29/30th: ====

44 sources used for the model, rms is reduced from 3.29" to 1.48" by following corrections of parameters (azimuth/elevation offset, horizontal/vertical Nasmyth correction):
|| P2     || P7     || P10    || P11    || ||
|| +7.19" || -7.24" || -11.00" || +2.35"||+-0.85" ||

Implemented since November 4th, scan 118 (JP).

Observed pointing scatter and residuals after fit; sky coverage of sources:

{{attachment:151029_scatter.png||height=300}}        {{attachment:151029_coverage.png||height=200}}


==== 2015 October 16th: ====

27 sources used for the model, rms of fit is reduced from 5.68" to 3.30" by following corrections of parameters:
|| P10     || P11    || ||
|| -11.26" || -9.31" ||+-0.63"||

Implemented since October 16th (JP).

Observed pointing scatter and residuals after fit; sky coverage of sources:

{{attachment:151016_scatter.png||height=300}}  {{attachment:151016_coverage.png||height=200}}