Package Organization

The source code for the skycat application consists of the following packages:

Package Name	Namespace	Description
tclutil	util	General purpose Tcl and C++ utility classes and widgets.
astrotcl	astro	A collection of Tcl and C++ classes for astronomical software (image I/O, compression, world coordinates).
rtd	rtd	Real-time image display widget and application.
cat	cat	Astronomical catalog library and widgets for searching catalogs and browsing catalog directories.
skycat	skycat	Combines the rtd image display features with catalog searching features for the skycat application.

These packages are available from the skycat ftp directory: ftp://ftp.archive.eso.org/pub/skycat/. See the installation instructions at the end of this document for instructions on compiling and installing this package. The documentation for all of the packages is also available in ftp://ftp.archive.eso.org/pub/skycat/doc.

The rtd and cat package tar files each contain the tclutil and astrotcl packages, so you won't normally need to get them separately. For compatibility with previous releases they are treated as internal packages.

The above packages are also dependent on a Tcl/Tk environment, including the TclX , BLT and Itcl , which are also available from the above URL.

Each of the packages, including the skycat package, can be dynamically loaded in a Tcl application, if compiled with shared library support.