SAOImage DS9 Version 5.0 New Features
MacOSX Aqua Support
DS9 has been ported to MacOSX Aqua and is an universal application
which no longer requires X11.
Compressed FITS Support
DS9 supports compressed FITS images using RICE, HCOMPRESS, and GZIP
compression.
Mask Support
DS9 supports overlay masks. A mask is defined as a valid FITS
image,
in which a non zero value indicates that the selected mask color is to
be displayed instead of the data value color.
SkyView Support
DS9 provides support for HEASARC's image cutout service, SkyView.
This site provides image cutout service for a number of image surveys,
including SDSS.
Multi-Language Support
DS9 provides multi-language support. By default, the language used
for menus and dialog boxes is based on the value of the operating
system locale variable. The user may override the default value by
selecting the desired language in the preferences or by the -language command line option.
Preferences
Preferences are automatically saved when a user changes an option.
Selecting the saving preferences menu item is no longer needed.
For more detailed information, Please see Release Notes