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<-   The afocal collector   ->
Afocal collector
figures/collecteuraffocal.gif
Mechanical structure of the telescope : on the left, the upper platform carries the M1 mirror; on the right, the lower platform carries the M2 mirror, and the intermediate platform carries the dioptric objective and the focal block with its baffle and lid.
Crédit : Paris Observatory / LESIA / UFE

The afocal collector is made up of 2 parabolic confocal mirrors working out of axis. It is completed by :

  • a baffle, the function of which is to stop the parasitic light arising from the Earth (rejection rate of 10-13).
  • a protection lid which will open in flight, after the first measures are realized in darkness.