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GTC Secondary Mirror Drive System

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GTC Secondary Mirror Drive System
Client: GRANTECAN
Country: Spain

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.

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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.

  • 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.

Characteristics

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