.. -*- coding: utf-8 -*- .. _THELI: ***** THELI ***** Software Description ==================== THELI is a complete image processing system for the reduction of astronomical CCD data. Its software modules cover all necessary tasks from raw images of single- and multi-chip CCD cameras up to astrometrically and photometrically calibrated co-added images. The main focus is on observations in optical wavelengths. A scientific justification for the involved data-calibration modules and the used algorithms is published in the article `Astronomical Notes 326, 432 (Erben et al.)`__ __ THELI_paper_ THELI exists in two flavours. This version is *command-line* based and the user interacts with the system via *shell script* commands on the UNIX prompt. Mischa Schirmer extended THELI with a Graphical User Interface (GUI) which allows a complete menu-driven and interactive work with THELI. Moreover, he developed additional codes to process Near-Infrared observations. This GUI and the Near Infrared modules are not included in this package but are distributed and documented `here`__. Beginners in the fields of data processing and imaging pipelines are advised to start with Mischas GUI version. Users who wish to process only a small data set, or who intend to use THELI only occasionally, are also encouraged to use that version. The *command-line* interface better suits the needs for more involved data processing of complete surveys. It is also the method of choice for long, non-interactive processing runs or if remote processing is necessary. It requires deeper knowledge of THELI internals, and has higher demands on the users computing knowledge, e.g. bash shell scripting. __ THELI_GUI_release_ Software Prerequisites ====================== THELI is based on many external software modules. Most of them are integrated as source code into the distribution package. Furthermore, the following software components are required for a full functional THELI install: * A UNIX/Linux machine with a standard *scientific computing* setup. This includes the GNU Compiler Collection, standard UNIX/Linux tools such as :command:`awk`, :command:`sort`, :command:`find`. The :command:`bash` shell is required in version 3 or higher. * For astrometric calibration THELI can use Emmanuel Bertins `scamp`_, or a modified version of Mario Radovichs `Astrometrix`_. The first option is currently our method of choice. * THELI uses the SuperMongo (`SM`_) plotting tool to create control plots. It is non-free but typically available at astronomical institutes. * In the astrometric and photometric calibration modules, THELI makes heavy use of `Python`_ (required is V2.X with X>=5) and the Python modules `pyfits`_ (V1.1 or higher), `numpy`_ (V1.3.0 or higher) and `matplotlib`_ (V0.98.1 ot higher) The THELI install setup will test the current configuration of your machine and report unmet dependencies. Software Download ================= Please find the latest version of the software at `here`__. You find there also a modified version of Mario Radovichs `Astrometrix`_ if you want to use this module for astrometric calibration of your data. __ THELI_release_ Please find Mischa Schirmers THELI GUI version `here`__ __ THELI_GUI_release_ Software Authors and Software License ===================================== The software is maintained by Thomas Erben at the Argelander-Institut für Astronomy in Bonn/Germany. Please `email_me`_ with your questions, suggestions and comments. THELI is released under the `GNU General Public License, version 2`__. Core parts of the software were contributed by Mischa Schirmer, Jörg Dietrich and Hendrik Hildebrandt. THELI is heavily based on public software, in particular from `Emmanuel Bertin `_, `Nick Kaiser `_, Erik Deul, `Mario Radovich `_, and the `ESO Eclipse team `_. __ GPLv2_ Acknowledgements ================ If you use THELI for your own research, please cite it with the article `Astronomical Notes 326, 432 (Erben et al.)`__ __ THELI_paper_ .. include:: links.txt