The magnetospheric mission 
 
Double Star  ( Shuang-Xing ) 
is a Chinese - European project agreed between European Space Agency  
 ESA 
 and Chinese National Space Administration
CNSA .
The mission constitutes of two spacecraft TC-1 and TC-2 (Tan-Ce, 
i.e. Explorer) and cooperates with the
ESA-CLUSTER  
mission. Thus  6-point sounding of Earth's magnetosphere is provided, as CLUSTER already operates with four satellites. 
In parallel with the Chinese scientific instruments, the payload of  TC-1 and TC-2 
includes also European scientific instruments. With exception of NUADU, 
the EU-instruments are inherited from the Cluster mission (the spare models). 
The Energetic Neutral Atom (ENA) imager NUADU 
( NeUtral Atom Detection Unit ) is installed onboard of TC-2 and provides panoramatic imaging of the ENA-emitting magnetospheric regions,
particularly the ring current.
NUADU was developed specifically for operation on board of the TC-2 
in the frame of European - Chinese cooperation agreed among Laboratory of Space Technology ( P.I. Susan McKENNA-LAWLOR) at National University of Ireland
STIL-NUIM  in Maynooth, Swedish Institute of Space Physics 
IRF  
in Kiruna and Center for Space Science and Applied Research 
CSSAR  
in Beijing. 
The project also cooperates with Johns Hopkins University - Applied Physics Laboratory
JHU-APL, Maryland, USA, 
aiming for parallel two-point (stereo) ENA-imaging in cooperation with the NASA-IMAGE satellite.
 
The Department of Space Physics IEP-SAS has participated on NUADU development and construction
in the frame of scientific-technical cooperation between IEP-SAS and STIL-NUIM, Maynooth, Ireland.
More popular about the project (in Slovak only): 
Dvojhviezda 
- magazine Plus7dní 47/2004 (pdf 1.7MB).
Dvojhviezda 
- original version (pdf 1MB).
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- magazine for science and technology QUARK 7/2005.