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:
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:
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:
