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Cleanroom prepared for WEAVE Spectrometer

Submitter: Johan Pragt
Description: The cleanroom at ASTRON is upgraded with a crane and now equipped for assembly of the WEAVE spectrograph. The sub-units of the Spectrograph are so large and heavy that manual lifting is not possible. The Collimator Unit and Camera Unit are up to 350 kg of weight. Also other smaller units like detector/cryostat system need a crane support.
A cable feed-through and guide system is also installed for electrical (control) cabling, optical fibres, cooling and LN2 feeding.

The optical table of the WEAVE Spectrograph is already installed inside the cleanroom. The slit unit (first part of the optical train) is in assembly phase. The collimator unit is in production in Dwingeloo and lenses at TNO in Delft. Camera lenses are in production at INAOE in Mexico and camera mechanics production will start soon in Dwingeloo.

WEAVE is a new multi-object survey spectrograph for the 4.2-m William Herschel Telescope (WHT), on La Palma in the Canary Islands. WEAVE is build by several institutes at several countries. The Spectrograph team is lead by Johan Pragt, NOVA. Dutch PI is Scott Trager, Kapteyn Astronomical Institute, RUG.

Copyright: NOVA Optical IR Instrumentation Group
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