CANARY Phase B: the LGS upgrade to the CANARY tomographic MOAO pathfinder
Abstract
CANARY has been designed to demonstrate full tomographic LGS MOAO in a configuration as close as possible to that of the proposed EAGLE instrument for the E-ELT. A phased approach to the instrument development has been adopted to reduce the overall risk and developmental complexity with the initial Phase A system performing NGS MOAO only using three off-axis NGS WFS. The Phase B system will add four off-axis open-loop LGS WFSs to this system allowing combined LGS/NGS tomography to be performed, thereby taking CANARY one step closer to an EAGLE-like configuration. The upgrade to include LGS within CANARY requires several new and upgrades subsystems, including a multiple LGS launch system, LGS WFSs and a new LGS calibration unit. Here we present the requirements, design, and subsystem performance for the Phase B system, as well as simulations of the on-sky AO performance of CANARY.
- Publication:
-
Second International Conference on Adaptive Optics for Extremely Large Telescopes. Online at <A href="http://ao4elt2.lesia.obspm.fr">http://ao4elt2.lesia.obspm.fr</A
- Pub Date:
- September 2011
- Bibcode:
- 2011aoel.confP...3M