The NuSTAR Survey of the Extended Chandra Deep Field South (ECDFS)

I will present the first results from the NuSTAR survey of the full 30'x30' area of the Extended Chandra Deep Field South. At its deepest, the survey reaches a depth of 360ks, corresponding to sensitivity limits of 1.3, 3.4 and 3.0 x 10^-14 ergs/s/cm2 in the 3-8keV, 8-24keV and 3-24keV bands, respectively. In total, we detect 49 unique sources, spanning the redshift range z=0.22-2.7, and probe below the "knee" of the 10-40keV luminosity function at z~1 for the first time.