Remarks
INTEGRAL (The International Gamma-Ray Astrophysics Laboratory) is the second medium-sized mission of ESA's Horizon 2000 Science Programme. INTEGRAL is dedicated to the fine spectroscopy (E/deltaE = 500) and fine imaging (angular resolution: 12 arcmin FWHM) of celestial gamma-ray sources in the energy range 15 keV to 10 MeV with concurrent source monitoring in the X-ray (3-35 keV) and optical (V-band, 550 nm) energy ranges.