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| Paper: |
ORBS, ORCS, OACS, a Software Suite for Data Reduction, and Analysis of the Hyperspectral Imagers SITELLE and SpIOMM |
| Volume: |
495, Astronomical Data Analysis Software and Systems XXIV (ADASS XXIV) |
| Page: |
327 |
| Authors: |
Martin, T.; Drissen, L.; Joncas, G. |
| Abstract: |
SITELLE (installed in 2015 at the Canada-France-Hawaii Telescope)
and SpIOMM (a prototype attached to the Observatoire du
Mont-Mégantic) are the first Imaging Fourier Transform
Spectrometers (IFTS) capable of obtaining a hyperspectral data cube
which samples a 12 arc minutes field of view into four millions of
visible spectra. The result of each observation is made up of two
interferometric data cubes which need to be merged, corrected,
transformed and calibrated in order to get a spectral cube of the
observed region ready to be analysed. ORBS is a fully automatic data
reduction software that has been entirely designed for this
purpose. The data size (up to 68 Gb for larger science cases) and
the computational needs have been challenging and the highly
parallelized object-oriented architecture of ORBS reflects the
solutions adopted which made possible to process 68 Gb of raw data
in less than 11 hours using 8 cores and 22.6 Gb of RAM. It is based
on a core framework (ORB) that has been designed to support the
whole software suite for data analysis (ORCS and OACS), data
simulation (ORUS) and data acquisition (IRIS). They all aim to
provide a strong basis for the creation and development of
specialized analysis modules that could benefit the scientific
community working with SITELLE and SpIOMM. |
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