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NCSA Astronomy Digital Image Library     User's Guide: Viewers

Client-side Viewers for Use with the ADIL

This document provides links to places where users may obtain viewers for the various kinds of documents provided by the Library. You should consult your browser's on-line help to learn how integrate the viewer with your browser. See also these lists of resources for various platforms:

GIF and JPEG images

X-Windows, Microsoft Windows MacOS

FITS images

The Flexible Image Transport System--or FITS--is the standard format in astronomy for storing images and transmitting them from one system to another. FITS images differ from most of the images you probably encounter on the Net in that the value stored in the pixels represents scientific data (like amount of light from an area of the sky); thus, no color table is usually associated with the image. An image visualizer application applies a color table to the data in the image so the image can be displayed. Such applications usually allow the user to manipulate the colortable interactively to enhance particular aspects of the data.

For more information about the FITS format, consult NASA's FITS Support Office Home Page.

NOTE: FITS images are downloaded from the ADIL to browsers using the MIME-type application/x-fits

X-Windows

Microsoft Windows Mac-OS

MPEG movies

We recommend you use an MPEG player that has a control panel that allows you step through the individual frames of the movie and replay the sequence without having to re-download it over the network.

X-Windows

Microsoft Windows See also the Berkeley MPEG Research home page for additional information on MPEG encoder, decoder, and player tools.


VRML visualizations

VRML stands for Virtual Reality Markup Language and is a way to describe 3-D objects and spaces. The Library uses VRML to present visualizaions of 3-D images which may be explored with a VRML viewer.

X-Windows, Microsoft Windows

For more information on VRML resources, check out the NCSA VRML Home Page.


PostScript files

X-Windows Microsoft Windows MacOS


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The Astronomy Digital Image Library is a project of Radio Astronomy Imaging Team
at the National Center for Supercomputing Applications on the campus of the University of Illinois at Urbana-Champaign

Contact the ADIL: adil@ncsa.uiuc.edu