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VISIR:
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VISIR SCIENCE DATA: GENERAL

VISIR science data can be reduced using the ESO VISIR pipeline. On Paranal, the pipeline makes an attempt to automatically reduce all science data. Its purpose is to offer a quick look to assess data quality etc.

At QC Garching, SCIENCE data are pipeline-reduced and associated with the best available calibrations (quality-checked and closest in time, following the calibration plan). All offered settings are pipeline supported with the exception of BURST and RASTER modes.

The products of science reduction are also quality-checked. If any irregularity in the reduced data is found, an attempt is made to improve on this. If not possible, in most cases, information about the problem is made available in the data package. The policy is to never suppress data. The products are ingested into the Science Archive and delivered to the PIs.

Note, that as of October 2011, (P88), the science data are no longer processed by QC Garching. The documentation of science pipelines and science processing is kept here for its heritage value.


TYPES OF RAW SCIENCE DATA

The following types of raw science data exist for VISIR:


MODE DPR CATG DPR TYPE DPR TECH template description comments
IMAGING SCIENCE OBJECT IMAGE,CHOPNOD,JITTER
IMAGE,CHOPPING,JITTER
IMAGE,NODDING,JITTER
IMAGE,DIRECT,JITTER
VISIR_img_obs_AutoChopNod chopping and/or nodding observations supported by the pipeline
visir_img_combine
IMAGING SCIENCE OBJECT IMAGE,CHOPNOD,RASTER
IMAGE,CHOPPING,RASTER
IMAGE,NODDING,RASTER
VISIR_img_obs_GenericChop raster observations no pipeline support
IMAGING SCIENCE OBJECT IMAGE,PRE,CHOPNOD,JITTER
IMAGE,PRE,CHOPNOD,RASTER
VISIR_img_obs_AutoChopNod preimaging observations supported by the pipeline
visir_img_combine (no RASTER mode)
IMAGING SCIENCE OBJECT IMAGE,BURST,CHOPNOD,JITTER VISIR_img_obs_BurstAutoChopNod burst observations no pipeline support (as of P87)
SPECTROSCOPY SCIENCE OBJECT SPECTRUM,CHOPNOD
SPECTRUM,NODDING
VISIR_spec_obs_LRAutoChop
VISIR_spec_obs_HRAutoChop
LR and HR-slit spectral observations supported by the pipeline
visir_spc_obs
SPECTROSCOPY SCIENCE OBJECT ECHELLE VISIR_spec_obs_HRXAutoChop HR echelle spectral observations supported by the pipeline
visir_spc_obs_ech

SCIENCE PRODUCTS

MODE   pipeline recipe description
IMAGING [sci_img.gif 3K] visir_img_combine combined images, corrected for detector stripping, no image reconstruction
SPECTROSCOPY LR, HR-slit [sci_specLR.gif 14K]

visir_spec_phot

reduced LR (and HR-slit) spectroscopy, corrected for detector stripping
SPECTROSCOPY HR-echelle [sci_specHR.gif 14K] visir_spec_obs_ech reduced HR-echelle spectroscopy, corrected for detector stripping

All product file names follow a dedicated naming scheme.

PROBLEMS AND ISSUES

VISIR pipeline problems are documented under on the data package page.


 
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