Imaging characteristics of the development model of the JET-X x-ray telescope

The Joint European X-ray Telescope, ''JET-X'', which is to be the core instrument of the Russian Spectrum-X astrophysics mission in 1994, will study the 3-10 keV-band emission from X-ray sources. The instrument is configured as two identical coaligned X-ray imaging telescopes; focal plane imaging is furnished by a cooled CCD detector which yields both good spectral resolution and high spatial resolution. The mirror shells have Wolter I geometry, and are manufactured by means of an electroforming replication process.