We have developed a diagnostic suitable for high photon energy (∼7 keV) time resolved one‐dimensional x‐ray imaging on Nova. This diagnostic uses a 12 &mgr;m wide, 750 &mgr;m long imaging slit mounted on a 20× magnification snout which is coupled to an x‐ray streak camera of variable streak speed. The diagnostic fits into retractable manipulators on the ten‐beam chamber at Nova.Insitubacklit grid experiments using a large‐area backlighter give a spatial resolution full width at half‐maximum of about 15 &mgr;m with high brightness.