Difference: ImprovedPointing (4 vs. 5)

Revision 52014-02-25 - MiguelSanchez

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Current status of standard pipeline pointing products: ground-based improvements

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  Below an example for a star (UZ Tau) in OD684, on the left the current HSA level 2 blue channel (70 microns) maps and in the right processed with the new pointing product. The absolute astrometry offset is reduced from 7.5 arcsec to 1 arcsec.
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More details are provided in the Release Note v1.0
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More details are provided in the Release Note v1.0
 
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A copy of the test report can be found here New pointing products test report (PDF)
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A copy of the test report can be found here New pointing products test report (PDF)
 
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UZ_Tau.jpg
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UZ_Tau.jpg
  Here is a SPIRE example: PSW map GammaDra from OD450 with/without improved pointing correction: although from the circle looks like there isn't any significant offset change, it is possible to appreciate the (tiny) difference in flux distribution in the pixels.
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GammaDra_450_PSW.png
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GammaDra_450_PSW.png
 

Additional corrections included (SPG v10.0.3 & v11.1)

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  The files linked below list the expected STR-induced offsets at the nominal RA, DEC coordinates (i.e. those entered as "target" coordinates in HSPOT) for all observations in the range OD 320-761, in comma-separated format (readable in Excel, Open Office, TOPCAT and many other common tools).
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  • offsets_HIFI.csv: STR-induced offsets at the nominal RA, DEC positions for HIFI observations in the range OD320-761
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  • offsets_HIFI.csv: STR-induced offsets at the nominal RA, DEC positions for HIFI observations in the range OD320-761
 
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STR-induced offsets for observations in the period OD762-865 (excluding 858)

 
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