Difference: PacsCalibrationWeb (111 vs. 112)

Revision 1122014-07-29 - BrunoAltieri

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META TOPICPARENT name="WebHome"

PACS instrument and calibration web pages

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  A report of the map-making working group compiled by Roberta Paladini is available: PACS map-making tools: analysis and benchmarking, 1 Nov. 2013.
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An updated version of that report concentrating on JScanam, MADmap and Unimap in their latest versions is available in PACS Map-making Tools: Update on Analysis and Benchmarking, 30 March 2014.

 The optical field distortion is not applied in level 1, as this calibration is applied by the native photProject task. As a result, external map-makers starting from level 1 have a systematic flux overestimate of 6-7% in the red channel and a lower underestimate (~2%) in the blue channel of the flux scale. This is corrected for MADmap in Hipe12 by introducing the new task convertToFixedPixelSize() at the end of level1. The flux difference come from the fact that the mean values of the optical flat are significantly different from 1, in other words it cannot be assumed by external map-makers that the pixel sizes is constant of the field of view at 3.2"/6.4 in the blue/red channel respectively.

Scanamorphos and Unimap are also affected, but not JScanam that makes use of photProject.

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  SPIRE photometers.
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META FILEATTACHMENT attr="" autoattached="1" comment="Raw measurements PACS beams - central spaxel only" date="1362764493" name="SpecSpatial_BeamEfficiency_central_spaxel_tables_v1.tar.gz" path="SpecSpatial_BeamEfficiency_central_spaxel_tables_v1.tar.gz" size="123836" user="Main.BartVandenbussche" version="1"
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META FILEATTACHMENT attr="" autoattached="1" comment="PACS Map-making Tools: Update on Analysis and Benchmarking" date="1406677684" name="pacs_mapmaking_report14_v2.pdf" path="pacs_mapmaking_report14_v2.pdf" size="2878552" user="Main.BrunoAltieri" version="1"
 
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