HAPI-4 (X-Ray telescope)

Developed by Institute of High Energy Physics (IHEP), Beijing, China

Balloon launched on 9/25/1993, from Xiang He Balloon Launch Center, Hebei, China

Purpose of the flight and payload description

The HAPI-4 is a hard X-ray telescope which consists of a high pressure (3 atmospheres) Xe multi-wire proportional counter with an area of 1950 cm2 and a set of eight NaI(Tl)/Csi(Na) phoswich scintillators with an effective volume of 200 cm2 x 6 mm. The detector electronics and data acquisition system are based on an STD bus of a microcomputer and intelligent interfaces with one-chip processors. The design connects all the subsystems, including data, acquisition, housekeeping data, attitude control, telemetry and telecommand to work in a highly efficient way.

Details of the balloon flight

Balloon launched on: 9/25/1993
Launch site: Xiang He Balloon Launch Center, Hebei, China  
Balloon launched by: Institute of High Energy Physics (IHEP)
Balloon manufacturer/size/composition: Zero Pressure Balloon 40.000 m3

During this flight was observed the region of Cygnus, obtaining one image of the Cygnus X-1 X-Ray source. This was the first successful X-ray imaging observation in China.

External references

Images of the mission

The Instrument The balloon

If you consider that this website is interesting or useful, you can help to keep it running with just the equivalent of the price of a cup of coffee. Click on the button on the right for more information.



2270