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by Franรงois Rigaut

GeMS Update During the past six months, good progress has been made on the GeMS (Gemini Multi-conjugate Adaptive Optics System) on multiple fronts.

Figure 1.

Laser bench support structure which was recently accepted in Santiago.

We are currently aiming to have the first laser light on the sky at Gemini South by the end of 2009 and start the AO bench technical commissioning in April 2010. Integration

of

the

CANOPUS

optical

bench

continues in the instrument laboratory at the Gemini South Base Facility. The entire electronics thermal enclosure structure has been stiffened to avoid mechanical contact with the optical table. A redesign of the cooling system is progressing, with additional involvement from Gemini North engineers. The tiptilt wavefront sensor characterization is well advanced. Reconstructor improvement and tomography work is also underway. At the end of May, an engineer from the Optical Sciences Company (tOSC) will visit to help commission

the

remaining

real-time

computer

functionalities. The main remaining CANOPUS tasks are linked to electronics (integration of the laser guide star wavefront sensor motion control in our

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GeminiFocus

Issue 38 - June 2009  

GeminiFocus