DS9 Version 3.0 New Features

RGB Images

DS9 now supports RGB Images. An RGB Image is an image which is composed of 3 color channels, red, green, and blue. In each channel is loads a FITS image, FITS binary table, or FITS Mosaic. Each channel has its own Scale and Bin parameters. DS9 will align the images in the three channels base on the WCS, Physical, or Image coordinates. For more infomation, see File Menu, XPA, and Command  Line Options.

DS9 support two new file formats for RGB images. The first is FITS Data Cube, containing 3 slices which represent the red, green, and blue color channels. The second, is a FITS Multiple Extension file, containing 3 extensions, again representing the red, green, and blue color channels. For more infomation, please see File Formats.

Improved Support for Web based Archives

A number of improvements have been implement to support web based archives. This includes expanded support for the proposed FITS Mime-Type RFC.

Improved Plot Widget Support

Analysis plots now support multiple data sets, and can be fully configured via xpa.

Large File Support

Selected ports of ds9 now support very large files, typically larger than 2Gb. Furthermore, memory management has been enhanced to greatly improve performance when processing very large files.

For more detailed information, Please see Release Notes