Seo, Byoung-Joon and Nissly, Carl and Angeli, George and Ellerbroek, Brent and Nelson, Jerry and Sigrist , Norbert and Troy, Mitchell (2009) Analysis of normalized point source sensitivity as a performance metric for large telescopes. Applied Optics, 48 (31). pp. 5997-6007. ISSN 0003-6935 http://resolver.caltech.edu/CaltechAUTHORS:20091120-115655275
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We investigate a new metric, the normalized point source sensitivity (PSSN), for characterizing the seeing-limited performance of large telescopes. As the PSSN metric is directly related to the photometric error of background limited observations, it represents the efficiency loss in telescope observing time. The PSSN metric properly accounts for the optical consequences of wave front spatial frequency distributions due to different error sources, which differentiates from traditional metrics such as the 80% encircled energy diameter and the central intensity ratio. We analytically show that multiplication of individual PSSN values due to individual errors is a good approximation for the total PSSN when various errors are considered simultaneously. We also numerically confirm this feature for Zernike aberrations as well as for the numerous error sources considered in the error budget of the Thirty Meter Telescope (TMT) using a ray optics simulator. Additionally, we discuss other pertinent features of the PSSN, including its relations to Zernike aberration, RMS wave front error, and central intensity ratio.
|Additional Information:||© 2009 Optical Society of America. Original Manuscript: June 1, 2009; manuscript accepted: September 30, 2009; revised manuscript: September 28, 2009; published: October 27, 2009. This research was carried out in part at the Jet Propulsion Laboratory, California Institute of Technology, and was sponsored by the California Institute of Technology and the National Aeronautics and Space Administration (NASA). The authors gratefully acknowledge the support of the TMT partner institutions. They are the Association of Canadian Universities for Research in Astronomy (ACURA), the California Institute of Technology, and the University of California. This work was supported as well by the Gordon and Betty Moore Foundation, the Canada Foundation for Innovation, the Ontario Ministry of Research and Innovation, the National Research Council of Canada, the Natural Sciences and Engineering Research Council of Canada (NSERC), the British Columbia Knowledge Development Fund, the Association of Universities for Research in Astronomy (AURA), and the U.S. National Science Foundation (NSF).|
|Classification Code:||OCIS codes: 110.6770, 110.3925|
|Official Citation:||Byoung-Joon Seo, Carl Nissly, George Angeli, Brent Ellerbroek, Jerry Nelson, Norbert Sigrist, and Mitchell Troy, "Analysis of normalized point source sensitivity as a performance metric for large telescopes," Appl. Opt. 48, 5997-6007 (2009) http://www.opticsinfobase.org/abstract.cfm?URI=ao-48-31-5997|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Jason Perez|
|Deposited On:||20 Nov 2009 22:49|
|Last Modified:||26 Dec 2012 11:34|
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