Following three X-ray astronomical satellites, HAKUCHO(1979), TENMA(1983), and GINGA(1987), we, Japanese X-ray astronomers, are planning an X-ray telescope mission called SXO in early 1990's. Main project is the X-ray spectroscopy with E/ΔE >20 at 6 keV and with spatial resolution of about 1 arc min. A thin foil mirror is considered to cover the energy range up to 10 keV with high throughput (>500 cm2 at 6 keV). A position sensitive gas scintillation proportional counter and some types of solid state detector are studied as the focal plane instruments.
|