Since december 1, 1989, the SIGMA telescope has been making more than 800 sky observation sessions achieving spectrometry as well as high resolution images (a few arc-minutes accuracy) of galactic and extragalactic sources between 35 KeV and 1.3 MeV.


It means more than 11000 imaging hours out of which more than 2000 hours dedicated to the Galactic Center.

The SIGMA planning gives the list of the observations made by the telescope for several years :