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Diffraction limited imaging in the visible from large ground-based telescopes: new methods for future instruments and telescopes

Mackay, Craig and Law, Nick and Stayley, Timothy D. (2008) Diffraction limited imaging in the visible from large ground-based telescopes: new methods for future instruments and telescopes. In: Ground-based and Airborne Instrumentation for Astronomy II. Proceedings of SPIE. No.7014. Society of Photo-Optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 70141C. ISBN 9780819472243. https://resolver.caltech.edu/CaltechAUTHORS:20190715-142704961

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Abstract

Faint object diffraction limited imaging in the visible from the ground has recently been demonstrated on a 5 m telescope with more than twice the resolution of Hubble for the first time. It has shown the way towards diffraction limited imaging in the visible with the next generation of large telescopes. This paper describes the results of experiments to show how this is achieved and what is needed to work well with faint natural guide stars. The importance of a large isoplanatic patch size is also emphasised. In particular, we will describe a new approach to the design of high efficiency, low order adaptive curvature sensors which use photon counting CCD detectors. Such systems used on larger telescopes together with image segmentation and resynthesis techniques using closure phase techniques are shown to have an important place in achieving these goals. The optimum combination of these different techniques will be explained for a variety of different applications.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1117/12.787439DOIArticle
ORCID:
AuthorORCID
Law, Nick0000-0001-9380-6457
Additional Information:© 2008 Society of Photo-Optical Instrumentation Engineers (SPIE). We should like to acknowledge useful discussions with John Baldwin and Peter Warner of the Cavendish Laboratory, Cambridge University, and with Olivier Guyon, Subaru Telescope. We particularly thank the PALMAO team, especially Jenny Roberts and Antonin Bouchez, for all their help during the design, setup and operation of the instrument. Thanks also go to the Palomar Observatory team for great assistance throughout our run.
Subject Keywords:Lucky Imaging, Electron multiplying CCDs, EMCCDs, Curvature sensors, Adaptive optics
Series Name:Proceedings of SPIE
Issue or Number:7014
DOI:10.1117/12.787439
Record Number:CaltechAUTHORS:20190715-142704961
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20190715-142704961
Official Citation:Craig Mackay, Nick Law, and Timothy D. Stayley "Diffraction limited imaging in the visible from large ground-based telescopes: new methods for future instruments and telescopes", Proc. SPIE 7014, Ground-based and Airborne Instrumentation for Astronomy II, 70141C (9 July 2008); https://doi.org/10.1117/12.787439
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:97152
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:15 Jul 2019 22:20
Last Modified:16 Nov 2021 17:27

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