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 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
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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/* . 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/* . 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
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Acknowledgements:
Christer Sandin, CSandin(at)aip.de
(End) Christer Sandin [AIP, Germany], Patricia Vannier [CDS] 19-Apr-2010