0320086

We propose to use advantages of the INTEGRAL observatory -- excellentenergy resolution and high sensitivity of its telescopes in the hardX-rays -- to study primary eclipse light curve of SS433 andspectral changes during the eclipse in hard X-rays inprecessional phase 0.5. This should help to localize the HXRemission region and derive its structure comparing HXR behavior withthe well-known data in softer X-ray bands (Ginga RXTE) and giveimportant hints for determination of the binary system parameters. [truncated! Please see actual data for full text]