Gamma-Ray Imaging with the Coded Mask IBIS Telescope

Details Gamma-Ray Imaging with the Coded Mask IBIS Telescope Gamma-Ray Imaging with the Coded Mask IBIS Telescope

2001-02-22

arxiv.org/abs/astro-ph/0102386v1

Astronomy and Astrophysics

Astrophysics

Contributed paper at the 4th INTEGRAL Workshop, 4-8 September 2000, Alicante (Spain). To be published in the ESA-SP serie : 4

Scientific paper

The IBIS telescope onboard INTEGRAL, the ESA gamma-ray space mission to be launched in 2002, is a soft gamma-ray (20 keV - 10 MeV) device based on a coded aperture imaging system. We describe here basic concepts of coded masks, the imaging system of the IBIS telescope, and the standard data analysis procedures to reconstruct sky images. This analysis includes, for both the low-energy detector layer (ISGRI) and the high energy layer (PICSIT), iterative procedures which decode recorded shadowgrams, search for and locate sources, clean for secondary lobes, and then rotate and compose sky images. These procedures will be implemented in the Quick Look and Standard Analysis of the INTEGRAL Science Data Center (ISDC) as IBIS Instrument Specific Software.

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