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What's new in version 14.x

Spectroscopy

• A new script has been provided to allow users to plot the telescope background spectrum model. The code and necessary files are provided on http://herschel.esac.esa.int/twiki/bin/view/Public/PacsCalibrationWeb?template=viewprint (PACS Spectrometer Calibration section).
• PacsCubes and PacsRebinnedCubes created by the pipeline will now display in HIPE cube viewers with a flip over the diagonal, as compared to previously (X: to the right, Y: upwards). This change allows the visualisation of PACS cubes into the PACS footprint orientation (note the axes display with X: downwards, Y: to the left). The displayed indices correspond to the PACS spaxel indices (see more in Sect. 6.3 of the DAG). The standard HIPE cube visualisation can be recovered in two steps, using the flip menu in the cube display control bar: no flip + vertical flip. When exporting the cube data outside HIPE, note that the data will still be organised according to standard cube indices.The new orientation makes it easier to compare the cubes in cube viewers (the Standard Cube Viewer or the Spectrum Explorer) to the display of the PacsSpectralFootprint viewer.

Product changes

• The error layer within Unimap Level 2.5 products is renamed as stdDev, being the standard deviation computed at every sky pixel with respect to the samples that are falling on it. It can be properly assumed as the error map only if associated to the Naïve map.

Spectroscopy

• Unchopped range scan observations in 14.2
  • For unchopped range scan observations, the on-source and off-source are separate obsids and each is reduced to Level2. Then the off-source data are subtracted from the on-source data and the "background subtracted" products added to Level 2.5. This has been the case for a long time. The difference now is that these products have a slightly different name: "BS" is appended to the product names as viewed in HIPE and to the FITS file names on disc.

• • A new product is provided at Level 2 for all (line, range, chopNod, unchopped) pointed observations, and also at Level 2.5 for the subset of unchopped, rangeScan observations. This table, HPSSPEC[BS][R|B], contains the extracted spectrum of the central spaxel, and the point source calibrated spectra "c1" and "c129" from the pipeline task extractCentralSpectrum. Since the point-source calibrated spectra are taken from the centre of the cube, it is necessary that the source is located within spaxel 2,2 (the central one). However, we make no determination that the target of the observation actually is a point source - that is up to the end-user to establish. These tables are also provided as SBPs.
  • Added in 14.2.0: the output spectrum "c9" from extractCentralSpectrum is also provided.
• Level 3 extracted spectra table in 14.0, 14.2