![]() However, all the visualization techniques come directly from SAOImage. DS9 inherited TNG's support of regions, XPA, external analysis support, and the general GUI. Basically, all the real work is done in C++. A number of Tk Canvas widgets in C++ were created to support all the functionality needed. The GUI is implemented as a very thin layer of Tk. Current funding is provided by the NASA High Energy Astrophysics Science Archive Center and the Chandra X-ray Science Center.ĭS9 is a Tcl/Tk application. For lack of a name, the new project was referred to as DS9, the logical extension of the Star Trek series. This project was funded by the NASA Applied Information Systems Research Program, under the title "Future Directions for Astronomical Image Display". In 1998, while working with Eric, William Joye began a complete rewrite of TNG, based on the experience developed while supporting TNG. In particular, it utilized XPA, (X11 Public Access, also written by Eric) which allowed TNG to be scripted via a shell, or from other application. It explored new GUI interfaces and supported a new external analysis interface. TNG was based on IRAF's XIMTOOL graphics libraries and Tcl. In the mid 1990's, with the administrative support of Steve Murray, Eric Mandel developed SAOtng, or (SAOImage, The Next Generation), named after the Star Trek series. Since Mike's departure from SAO, SAOImage has been maintained by Jessica Mink. SAOImage was a brilliant program, implementing techniques in scientific visualization 20 years ago that are still being used by today's applications. In fact, it was one of the first X11 based applications publicly made available. SAOImage was first implemented in X10, then reimplemented in X11. In 1990, Mike Van Hilst, at the Smithsonian Astrophysical Observatory, Center for Astrophysics, Harvard University, developed SAOImage. Story of SAOImageDS9 The Story of SAOImageDS9: How DS9 got its name
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