||Advanced Features of the X-shooter Pipeline
||461, Astronomical Data Analysis Software and Systems XXI
||Goldoni, P.; Flores, H.; François, P.; Royer, F.; Haigron, R.
||The X-shooter pipeline has been routinely performing the reduction of
the data of the X-shooter spectrograph installed on the ESO UT-2
telescope on Paranal since October 2009. The pipeline is also used to
produce scientific papers. Up to now more than 30 scientific papers
have used the X-shooter pipeline.
For scientific publication the users normally use the pipeline to produce 2D sky
subtracted images in wavelength and slit units. As for the extraction of the 1D
spectrum, only a basic extraction is provided, usually the user extracts
the spectrum by him/herself with IRAF/IDL tasks. The reduction of IFU
data is still not completely developed, in particular it is hampered by the
lack of atmospheric dispersion correction and it has been used mainly in operations.
Here we present new features that have been recently
implemented to overcome these shortcomings.
We have substantially improved the implementation of optimal
extraction in robustness and accuracy thus allowing its use for
point-like objects for S/N down to at least 5-10. Moreover we have
implemented a new method of IFU data reduction which corrects the
atmospheric dispersion through the observation of a standard star just before or after the science
We reduce public data with these new features. These new
features are being implemented for a public release.