VizieR Online Data Catalog: Catalog of X-ray sources in the NARCS (Fornasini+, 2014)

We performed Chandra ACIS-I observations in faint mode of a 2°x0.8° region of the Norma spiral arm in 2011 June. The ACIS-I consists of four 1024x1024 pixel CCDs, covering a 17'x17' field of view (Garmire et al. 2003SPIE.4851...28G). The on-axis spatial resolution of the ACIS-I is fully sampled by the 0.492"x0.492" CCD pixel but it increases greatly off-axis. The PSF increases in size and becomes more elliptical at large off-axis angles, such that at an off-axis angle of 10', the PSF has ellipticity ~0.3 and semi-major axis ~15' for an enclosed-count fraction (ECF) of 90% for 4.5 keV photons (Allen et al. 2004SPIE.5165..423A). The CCDs are sensitive to incident photons with energies in the 0.3-10.0 keV range, and have a resolution of about 50-300 eV. The time resolution of the CCDs, which is determined by the read-out time, is 3.2 s.

(3 data files).