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The Helios 2 system, which consists of the Helios 2A and Helios 2B, is a French-developed military Earth observation satellite program. Financed at 90% by France, the development also involved minor participation from Belgium, Spain, Italy and Greece.[1] Helios 2A was launched on December 18, 2004, by an Ariane 5 rocket from French Guiana. Helios 2B was launched five years later on December 18, 2009, carried also by an Ariane 5. The two satellites are identical.[2] They carry a Thales-built high-resolution visible and thermal infrared instrument with 35 cm resolution,[3] and an Airbus-built medium-resolution instrument.[4]

This article is about the Multinational military satellites. For other uses, see Helios 2 (disambiguation).

The Helios 2 will be replaced by the Composante Spatiale Optique (CSO), a new French program of three military observation satellites. The first satellite (CSO-1) was launched on December 19, 2018, the second (CSO-2) on December 29, 2020, with the final launch (CSO-3) being scheduled for 2022.


See also



References


  1. Archived October 31, 2012, at the Wayback Machine
  2. "Cnes : Helios". Archived from the original on 2009-05-04. Retrieved 2004-12-20.
  3. SpaceNews article on Helios II B
  4. CNES webpage on Helios II B



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