The software package for astronomical reductions with KMOS: SPARK

Davies, R.I.; Agudo Berbel, A.; Wiezorrek, E.; Cirasuolo, M.; Förster Schreiber, N.M.; Jung, Y.; Muschielok, B.; Ott, T.; Ramsay, S.; Schlichter, J.; Sharples, R.; Wegner, M.

Abstract

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.

Citation

Davies, R., Agudo Berbel, A., Wiezorrek, E., Cirasuolo, M., Förster Schreiber, N., Jung, Y., …Wegner, M. (2013). The software package for astronomical reductions with KMOS: SPARK. Astronomy & Astrophysics, 558, Article A56. https://doi.org/10.1051/0004-6361/201322282

• Journal Article Type: Article
• Publication Date: Oct 1, 2013
• Deposit Date: Dec 12, 2013
• Publicly Available Date: Jul 15, 2014
• Journal: Astronomy and astrophysics.
• Print ISSN: 0004-6361
• Electronic ISSN: 1432-0746
• Publisher: EDP Sciences
• Peer Reviewed: Peer Reviewed
• Volume: 558
• Article Number: A56
• DOI: https://doi.org/10.1051/0004-6361/201322282
• Keywords: Methods: data analysis, Techniques: imaging spectroscopy, Instrumentation: spectrographs, Infrared: general.