Davies, R.I. and Agudo Berbel, A. and Wiezorrek, E. and Cirasuolo, M. and Förster Schreiber, N.M. and Jung, Y. and Muschielok, B. and Ott, T. and Ramsay, S. and Schlichter, J. and Sharples, R. and Wegner, M. (2013) 'The software package for astronomical reductions with KMOS : SPARK.', Astronomy and astrophysics., 558 . A56.
The K-band Multi Object Spectrograph (KMOS) is a multi-object near-infrared integral field spectrometer with 24 deployable cryogenic pick-off arms. Inevitably, data processing is a complex task that requires careful calibration and quality control. In this paper we describe all the steps involved in producing science-quality data products from the raw observations. In particular, we focus on the following issues: (i) the calibration scheme which produces maps of the spatial and spectral locations of all illuminated pixels on the detectors; (ii) our concept of minimising the number of interpolations, to the limiting case of a single reconstruction that simultaneously uses raw data from multiple exposures; (iii) a comparison of the various interpolation methods implemented, and an assessment of the performance of true 3D interpolation schemes; (iv) the way in which instrumental flexure is measured and compensated. We finish by presenting some examples of data processed using the pipeline.
|Keywords:||Methods: data analysis, Techniques: imaging spectroscopy, Instrumentation: spectrographs, Infrared: general.|
|Full text:||(VoR) Version of Record|
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|Publisher Web site:||http://dx.doi.org/10.1051/0004-6361/201322282|
|Publisher statement:||Reproduced with permission from Astronomy & Astrophysics, © ESO|
|Date accepted:||No date available|
|Date deposited:||15 July 2014|
|Date of first online publication:||October 2013|
|Date first made open access:||No date available|
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