Spectrum-X-Gamma Satellite (Subscribe)
Links
US Spectrum-X-Gamma Coordination Facility
http://hea-www.harvard.edu/SXG/
Status, instruments, instructions, software, proposals, archives, and visitor information.
Spectrum Rntgen Gamma
http://www.dsri.dk/showpage.php3?id=54
Project information, observation program, instruments, overview, and operations.
Silicon X-Ray Array
http://www.astro.helsinki.fi/projects/sixa/sixa.html
Introduction, general features, progress, objectives and performance, and response and tools.