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← Revision 8 as of 2016-01-28 11:55:54 ⇥
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| == Pointing Results == | Overview of pointing sessions and resulting changes of pointing model with NIKA2: |
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| Overview of past pointing corrections (az ["] / el ["]): | ==== 2016 January 27th: ==== |
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| || Date/Scan || Source ||||Array 1 |||| Array 2 |||| Array 3 || comment || || 20151105s19 || 3C84 || 5.2 || -3.2 || -0.4 || -2.7 || 34.3 || 13.2 || || || 20151105s13 || 3C84 || 4.6 || -4.0 || -0.4 || -3.2 || 35.1 || 9.4 || || || 20151105s11 || Uranus || 6.3 || -3.3 || 2.5 || -6.1 || 21.9 || 26.7 || || || 20151105s7 || Uranus || 6.2 || 0.4 || 1.4 || -1.7 || 26.0 || 27.5 || || |
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}} |
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:
