Aerospace

GTC Secondary Mirror Drive System

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GTC Sistema de posicionamiento del espejo secundario GTC Sistema de posicionamiento del espejo secundario GTC Sistema de posicionamiento del espejo secundario GTC Sistema de posicionamiento del espejo secundario
GTC Sistema de posicionamiento del espejo secundario
GTC Sistema de posicionamiento del espejo secundario
GTC Sistema de posicionamiento del espejo secundario
GTC Sistema de posicionamiento del espejo secundario
  • Client: GRANTECAN
  • Country: Spain
  • Start date: 2000
  • Ending date: 2005
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The Secondary Mirror Drive System (M2DS) of the GTC consists of two main elements: a high-precision hexapode with field correction to drive a 1.2 m and 46 kg beryllium mirror.

The system is water-cooled, has integrated power and control electronics and heated external covers.

  • Characteristics:
  • Active alignment stage in 5 degrees of freedom with incremental accuracy of 1.5 μm in displacements and 0.5 μrad for rotation.
  • Fast guiding for field corrections.
  • Chopping motion up to 5 Hz for infrared observations with 0.02 μrad repeatability and jitter below 1 μrad.

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