Cryo Compatible Positioners to Align the Optics Combining the Images of the Individual Telescopes
For European Southern Observetory (ESO), Mt. Cerro Paranal, Chile
The Very Large Telescope array (VLT) is the flagship facility for European ground-based astronomy. It consists of four Unit Telescopes which can be combined to form a giant astronomical interferometer, allowing astronomers to see details much finer than with the individual telescopes. The light beams are combined using a complex system of mirrors which is designed with only a few moving parts for readjustment. In cooperation with ASTRON Nova, SmarAct developed a compact precision positioner for the use in cryo environments after a previous solution became unavailable.
SmarAct’s compact positioning stages were combined with a guiding mechanism to perfectly fit Nova’s mirror design and to enable the successful commissioning of the equipment.
© ESO/B. Tafreshi (twanight.org) (Image Credits)