ds9 [http://hea-www.harvard.edu/RD/ds9/] is an astronomical image display program
writen at the [Smithsonian Astrophysical Observatory].

It's written in tcl of course.
The widget set used is SAOTk [http://hea-www.harvard.edu/RD/saotk/]
(Papers: [http://monet.ncsa.uiuc.edu/adass98/Proceedings/joyew/]
[http://www.adass.org/adass/proceedings/adass99/O3-04/])


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ds9 also stands for Deep Space 9.

The High Energy Astrophysics Division of [SAO] has a preoccupation with
things [Star Trek].  Its second generation image display was named TNG and 
the third is ds9.

[Category Application]