Publication details for Prof Ray SharplesDavies, 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. (2013). The software package for astronomical reductions with KMOS: SPARK. Astronomy and astrophysics 558: A56.
- Publication type: Journal Article
- ISSN/ISBN: 0004-6361, 1432-0746
- DOI: 10.1051/0004-6361/201322282
- Keywords: Methods: data analysis, Techniques: imaging spectroscopy, Instrumentation: spectrographs, Infrared: general.
- Further publication details on publisher web site
- Durham Research Online (DRO) - may include full text
Author(s) from Durham
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.