BeppoSAX

BeppoSAX was an Italian/Dutch X-ray observing satellite launched 1996, operating until 2002. It observed the entire X-ray range (into extreme ultraviolet and gamma-ray ranges) and revealed the coordinates of some gamma-ray bursts (GRBs). Instruments:

• LECS - Low Energy Concentrator Spectrometer.
• MECS - Medium Energy Concentrator Spectrometer.
• HPGSPC - High Pressure Gas Scintillator Proportional Counter.
• PDS - Phoswich Detection System.
• WFC - Wide Field Camera.

A phoswich is a scintillator-arrangement used in some X-ray detectors, the word phoswich formed from "phosphor sandwich".