|Speaker||Talk Date||Talk Series|
|Craig Mackay (IoA)||8 June, 2011||Institute of Astronomy Seminars|
Lucky Imaging techniques are able routinely to deliver Hubble resolution on Hubble size telescopes on the ground. Diffraction limited imaging in the visible has already been demonstrated on a 5 m telescope by combining Lucky Imaging with low order adaptive optics wavefront correction. However traditional (Shack-Hartmann) adaptive optics wavefront sensors require bright reference stars greatly limiting the applicability of the technique. A new approach to building wavefront sensors will allow reference stars as faint as I=18.5 to be used on 8-10 m class telescopes to give angular resolutions in the visible of 15-20 milliarcseconds or 6-8 times that of Hubble. A new instrument (AOLI) is now been developed initially for use on the WHT 4.2 m telescope and also for the GTC 10.5 m telescope on la Palma. The development involves a consortium including the IAC (La Laguna), the ING, Universities of Cartagena, Cologne and Cambridge.