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Back FPU Feedhorns HFI and LFI

FPU Feedhorns HFI and LFI


Date: 18 May 2008
Satellite: Planck
Depicts: Top view of HFI and LFI feedhorns
Location: Centre Spatial de Liège (CSL)
Copyright: ESA/Thales

Close-up of the focal plane unit (FPU) feedhorns in the test configuration for the thermal balance / thermal vacuum test campaign at CSL, Belgium. The image shows the HFI bolometric detector array (small feedhorns on golden circular base) and part of the LFI radio receiver array (larger feedhorns in the background).
Last Update: 1 September 2019
7-Feb-2026 00:59 UT

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