[AstroPy] Kapteyn Package 2.1 released
J.P.Terlouw at astro.rug.nl
Tue Feb 15 09:04:32 EST 2011
We would like to announce the release of version 2.1 of the Kapteyn
Package, a collection of Python modules developed by the computer group
of the Kapteyn Astronomical Institute, University of Groningen, The
Some of the package's features:
- Classes for the handling of spatial and spectral coordinates, WCS
projections and transformations between different sky systems. Spectral
translations (e.g. between frequencies and velocities) are supported as
well as mixed coordinates. For WCS, Dr. Mark Calabretta's WCSLIB 4.7 is
used. WCSLIB is integrated in the package and need not be installed
- Tools for writing small applications for the display and interactive
inspection of (FITS) data and for the creation of plots with world
coordinate information, including all-sky plots. A unique feature is
the possibility to make plots with mixed coordinates, e.g. where one
axis is spatial and the other one is spectral. Matplotlib and PyFITS
- Utilities for use with Matplotlib such as obtaining coordinate
information from plots, interactively modifiable colormaps and timer
events (to facilitate movie loops).
- A class for the efficient reading, writing and manipulating of simple
table-like structures in text files.
- A class for plotting shapes like ellipses, rectangles and regular
polygons. For these shapes angles and distances along a great circle
are preserved. This class can be used for example to draw footprints on
all-sky plots or a beam to show the resolution of an instrument.
- Support for RGB-coded images.
- A class containing a function for estimating gaussian components in a
profile. These estimates could subsequently be used as initial
estimates for a least squares fit.
- and, of course, many smaller improvements and some bugfixes.
Currently supported architectures are Linux, Apple Mac OS X and
Extensive documentation, including tutorial and background information,
as well as download and installation instructions can be found at
J. P. Terlouw
Kapteyn Astronomical Institute
University of Groningen
NL-9700 AV Groningen
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