First Results from the IBIS/ISGRI Data Obtained During the Galactic Plane Scan ? II. The Vela Region

We report on INTEGRAL/IBIS observations of the Vela region during a Galactic Plane Scan (hereafter GPS) pre- senting the IBIS in-flight performances during these operations. Among all the known sources in the field of view we clearly detect 4U 0836 429, Vela X 1, Cen X 3, GX 301 2, 1E 1145.1 6141, and H0918 549 in the 20 40 keV energy range. Only Vela X 1 and GX 301 2 are detected in the 40 80 keV energy range, and no sources are visible above. We present the results of each individual observation (2200 s exposure), as well as those from the mosaic of these scans.