Difference: HipeWhatsNew8x (70 vs. 71)

Revision 712011-12-09 - CarolynMcCoey

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META TOPICPARENT name="HipeWhatsNew"

What's new in HIPE 8

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Level 1 Pipeline

  • New (optional) pipeline step allowing smooth band pass to eliminate standing waves: doFilterLoads. This is an alternative calibration scheme for strong continuum sources.

Changed:
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  • Substantial refactoring of CheckFrequencyGrid to correct assumptions made about the sequence of on-, off- and hc-datasets. This primarily affected HEB band data and resulted in unnecessary Quality Flags being raised.
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  • Substantial refactoring of CheckFrequencyGrid to correct assumptions made about the sequence of on-, off- and hc-datasets. This primarily affected HEB band data and resulted in unnecessary Quality Flags being raised. This correction produces a noticeable improvement in the noise and baseline quality of all observations performed in bands 6 and 7.
 

Level 2 Pipeline

  • Sideband gains coefficients added to metadata.
Added:
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  • doGridding now uses AOT parameters in the meta data (such as beam size, map size, and - for observations after OD 835) to create cubes that reflect how the observation was carried out. In the past gridding was done based only on a linear approximation of the beam size and for half beam or Nyquist spacing.

Other changes include:

    • the GUI now modifies filter parameters in connection with changes to pixel size entered in the GUI
    • introduction of a flyAngle parameter to allow the easy creation of rotated maps

 

HIFI Products

  • Meta data calVersion is applied to all calibrated products and has format HIFI_CAL_version_number

  • Updated browse image for point mode observations.
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  • Noticeable improvement in the noise and baseline quality of the level2 products of Spectral Scans performed in bands 6 and 7. This is due to a fix to the procedure that did combine the ON and OFF phases, which was not done optimally in earlier versions of the pipeline.
 

HIFI Spectrum Toolbox

Spectrum tasks (HIFI specifics)

 
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