SkyCat SkyCat is a tool for image visualization and accessing astronomy archive catalogs.
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measurement graph astronomy astronomy tool digitized sky survey accesses observation catalog

SkyCat Description

SkyCat is a tool for image visualization and accessing astronomy archive catalogs. SkyCat is a tool for image visualization and accessing astronomy archive catalogs.Here are some key features of "SkyCat":· Display FITS images, with support for the World Coordinate System (WCS), interactive measurement of offsets, and other standard visualization functions (SAOimage-like).· Overlay and edit color graphic objects on the image, 'tagging' sources with text, arrows, circles, or other graphic elements.· Display a compass indicating where north and east are in the image, based on the world coordinates information.· PostScript color printing of the display (image + graphics).· Access and load images from network image servers, such as the Digitized Sky Survey (DSS).· Select previously viewed images from a history menu and catalog.· The cut levels, color scale algorithm and colormap settings are remembered for each image.· Access and load catalog information from a number of popular astronomical catalogs, such as the HST Guide Star Catalog and many others.· Create, search and edit local user catalogs.· Save catalog data locally.· Overlay catalog sources on an image, taking object size and orientation into account.· Interact with Netscape to display more object information when available.· Access the observations catalog from the NTT, HST and CFHT Science Archives.· Access to SIMBAD and NED both as name resolvers as well as for information on known objects.· Retrieve preview and other compressed images and decompress them on the fly.· Retrieve and plot tabular preview data for a selected object as an X/Y graph.· Calculate, display and plot the center position, FWHM, angle and other information for a selected star/object.· Load and save compressed images in hcompress, gzip or UNIX compress format. · Access SkyCat features from a remote process via socket interface or Tk "send". · Access image header and data (FITS format) via SysV shared memory or mmap.· Interact with WWW browser to access catalog documentation and other documents.· Support for dynamically loaded skycat plugins that add new features or modify existing ones.· Load lists of catalogs from other sites (ESO, CADC, CDS, local) and and allow users to select a preferred default catalog list.Requirements:· Tcl/Tk 8.4What's New in This Release:· Replaced calls to free() with Tcl_Free() for Tcl lists accessed from C code, as well as other minor bugs that showed up under Debian GNU/Linux 3.1.

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