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J/A+A/515/A35  Reduction of integral-field spectrograph code P3D (Sandin+, 2010)

P3D: a general data-reduction tool for fiber-fed integral-field spectrographs. Sandin C., Becker T., Roth M.M., Gerssen J., Monreal-Ibero A., Boehm P., Weilbacher P. <Astron. Astrophys. 515, A35 (2010)> =2010A&A...515A..35S
ADC_Keywords: Models ; Spectroscopy Keywords: methods: data analysis - methods: observational - techniques: spectroscopic Abstract: The reduction of integral-field spectrograph (IFS) data is demanding work. Many repetitive operations are required to convert raw data into, typically, a large number of spectra. This effort can be markedly simplified through the use of a tool or pipeline, which is designed to complete many of the repetitive operations without human interaction. Here we present our semi-automatic data-reduction tool P3D, which is designed to be used with fiber-fed IFSs. Important components of P3D include a novel algorithm for automatic finding and tracing of spectra on the detector and two methods of optimal spectrum extraction in addition to standard aperture extraction. P3D also provides tools to combine several images, perform wavelength calibration and flat field data. P3D is at the moment configured for four IFSs. To evaluate its performance, we tested the different components of the tool. For these tests we used both simulated and observational data. We demonstrate that a correction for so-called cross-talk due to overlapping spectra on the detector is required for three of the IFSs. Without such a correction, spectra will be inaccurate, in particular if there is a significant intensity gradient across the object. Our tests showed that P3D is able to produce accurate results. P3D is a highly general and freely available tool. It is easily extended to include improved algorithms, new visualization tools, and support for additional instruments. The program code can be downloaded from the P3D-project web site http://p3d.sourceforge.net. Description: The files contain the full UN*X (up3d-1.1.1.tar.gz) and Windows (wp3d-1.1.1.tar.gz) versions of release 1.1.1 of P3D as it is found at the project web page http://p3d.sourceforge.net. Each file is downloaded and then extracted on the local machine. Installation instructions are found in the file README (specifically in p3d-1.1.1/README) for UN*X platforms (Linux, Mac OS X, Solaris). There are not any detailed installation instructions for Windows platforms yet, but the procedure is in general the same as for the other platforms. In order to use P3D without an IDL license follow the instructions in the README file on how to use the IDL Virtual Machine. P3D requires the program IDL to be installed; IDL can be downloaded from http://www.ittvis.com. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file unix-rm.txt 79 455 Installation instructions for UN*X version of release 1.1 of P3D up3d-1.1.1/* 0 15 Full UN*X version of release 1.1 of P3D win-rm.txt 80 455 Installation instructions for Windows version of release 1.1 of P3D wp3d-1.1.1/* 0 15 Full Windows version of release 1.1 of P3D up3d-1.1.1.tar 2015 78239 Compressed files for UN*X version wp3d-1.1.1.tar 2093 78239 Compressed files for Windows version p3d1.1.1.zip 512 6755 ZIP compressed files for Windows version
Acknowledgements: Christer Sandin, CSandin(at)aip.de
(End) Christer Sandin [AIP, Germany], Patricia Vannier [CDS] 19-Apr-2010
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