  We present the results of deep \chandra\ imaging of the central region of the
Extended Groth Strip, the AEGIS-X Deep (AEGIS-XD) survey. When combined with
previous \chandra\ observations of a wider area of the strip, AEGIS-X Wide
(AEGIS-XW; Laird et~al. 2009), these provide data to a nominal exposure depth
of 800ks in the three central ACIS-I fields, a region of approximately
$0.29$~deg$^{2}$. This is currently the third deepest X-ray survey in
existence, a factor $\sim 2-3$ shallower than the Chandra Deep Fields (CDFs)
but over an area $\sim 3$ times greater than each CDF. We present a catalogue
of 937 point sources detected in the deep \chandra\ observations. We present
identifications of our X-ray sources from deep ground-based, Spitzer, GALEX and
HST imaging. Using a likelihood ratio analysis, we associate multi band
counterparts for 929/937 of our X-ray sources, with an estimated 95~\%
reliability, making the identification completeness approximately 94~\% in a
statistical sense. Reliable spectroscopic redshifts for 353 of our X-ray
sources are provided predominantly from Keck (DEEP2/3) and MMT Hectospec, so
the current spectroscopic completeness is $\sim 38$~per cent. For the remainder
of the X-ray sources, we compute photometric redshifts based on multi-band
photometry in up to 35 bands from the UV to mid-IR. Particular attention is
given to the fact that the vast majority the X-ray sources are AGN and require
hybrid templates. Our photometric redshifts have mean accuracy of $\sigma=0.04$
and an outlier fraction of approximately 5\%, reaching $\sigma=0.03$ with less
than 4\% outliers in the area covered by CANDELS . The X-ray, multi-wavelength
photometry and redshift catalogues are made publicly available.
