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Getting lucky with adaptive optics: diffraction-limited resolution in the visible with current AO systems on large and small telescopes

Law, N. M. and Dekany, R. G. and Mackay, C. D. and Moore, A. M. and Britton, M. C. and Velur, V. (2008) Getting lucky with adaptive optics: diffraction-limited resolution in the visible with current AO systems on large and small telescopes. In: Adaptive Optics Systems. Proceedings of SPIE. No.7015. Society of Photo-Optical Instrumentation Engineers , Bellingham, WA, Art. No. 70152I. ISBN 9780819472250. https://resolver.caltech.edu/CaltechAUTHORS:20181217-124225840

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Abstract

We have recently demonstrated diffraction-limited resolution imaging in the visible on the 5m Palomar Hale telescope. The new LAMP instrument is a Lucky Imaging backend camera for the Palomar AO system. Typical resolutions of 35-40 mas with Strehls of 10-20% were achieved at 700nm, and at 500nm the FWHM resolution was as small as 42 milliarcseconds. In this paper we discuss the capabilities and design challenges of such a system used with current and near future AO systems on a variety of telescopes. In particular, we describe the designs of two planned Lucky Imaging + AO instruments: a facility instrument for the Palomar 200" AO system and its PALM3K upgrade, and a visible-light imager for the CAMERA low-cost LGS AO system planned for the Palomar 60" telescope. We introduce a Monte Carlo simulation setup that reproduces the observed PSF variability behind an adaptive optics system, and apply it to predict the performance of 888Cam and CAMERA. CAMERA is predicted to achieve diffraction-limited resolution at wavelengths as short as 350 nm. In addition to on-axis resolution improvements we discuss the results of frame selection with the aim of improving other image parameters such as isoplanatic patch sizes, showing that useful improvements in image quality can be made by Lucky+AO even with very temporally and spatially undersampled data.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1117/12.788621DOIArticle
ORCID:
AuthorORCID
Law, N. M.0000-0001-9380-6457
Moore, A. M.0000-0002-2894-6936
Additional Information:© 2008 Society of Photo-Optical Instrumentation Engineers. We particularly thank the PALMAO team, especially Jenny Roberts and Antonin Bouchez, for all their help during the design, setup and operation of the LAMP instrument. Thanks also go to the Palomar Observatory team for great assistance throughout our run.
Series Name:Proceedings of SPIE
Issue or Number:7015
DOI:10.1117/12.788621
Record Number:CaltechAUTHORS:20181217-124225840
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20181217-124225840
Official Citation:N. M. Law, R. G. Dekany, C. D. Mackay, A. M. Moore, M. C. Britton, V. Velur, "Getting lucky with adaptive optics: diffraction-limited resolution in the visible with current AO systems on large and small telescopes," Proc. SPIE 7015, Adaptive Optics Systems, 70152I (10 July 2008); doi: 10.1117/12.788621
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:91865
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:18 Dec 2018 19:39
Last Modified:16 Nov 2021 03:44

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