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← Revision 8 as of 2016-01-28 11:55:54 ⇥
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| Deletions are marked like this. | Additions are marked like this. |
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| Overview of past pointing sessions with NIKA2: | 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}} |
| Line 5: | Line 18: |
| 44 sources observed, rms is reduced from 3.26" to 1.48" by following corrections of parameters: || P2 || P7 || P10 || P11 || || +7.19" || -7.24" || 11.00" || +2.35" || |
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" || |
| Line 9: | Line 22: |
| Implemented since November 4th, scan 118 | 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}} |
| Line 13: | Line 31: |
| 27 sources observed, | 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"|| |
| Line 15: | Line 35: |
| Implemented since October 16th. | 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:
