Skycat Classes

The following table gives an overview of the Itcl classes defined by skycat :

Class Name	Parent Class	Description
SkyCat	rtd::Rtd	This class defines skycat's main top level image window and defines some supporting code for use by remote applications using Tcl send .
SkyCatCtrl	rtd::RtdImageCtrl	Defines the image frame and control panel within the main skycat window and also provides methods for drawing symbols in the image window in world or image coordinates.
SkyCatHDUChooser	util::TopLevelWidget	This is a pop up window that displays a list of available HDUs (FITS header/data units). This includes a listing of any FITS tables and image extensions. A small version of each image extension is also displayed.
SkySearch	cat::AstroCat	This is the top level window for searching catalogs. It adds image and symbol plotting support to the AstroCat parent class.
SkyQuery	cat::AstroQuery	Defines the frame in the catalog window for entering query parameters and adds buttons for setting the default search area from the image or a selected region in the image.
SkyQueryResult	cat::QueryResult	This class defines the frame in the catalog window use for displaying and editing catalog query results. The derived class adds a hook to the rtd pick object feature for selecting an object in an image to add to a local catalog.

The Reference section contains man pages for each of the skycat classes. The parent classes are described in the documentation for the cat and rtd packages. Part of the class hierarchy is shown below.