Complex sentence: With seven different instruments onboard, Granat was designed to observe the Universe at energies ranging from X-ray to Gamma-Ray, its main instrument SIGMA was in fact capable of imaging both hard X-ray and soft gamma-ray sources.
Split into simpler sentences: With seven different instruments onboard, Granat was designed to observe the universe at energies ranging from X-ray to gamma ray. Its main instrument, SIGMA, was capable of imaging both hard X-ray and soft gamma-ray sources.