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normalized point source sensitivity for off-axis optical performance evaluation of the thirty meter telescopeThe Normalized Point Source Sensitivity (PSSN) has previously been defined and analyzed as an On-Axis seeing-limited telescope performance metric. In this paper, we expand the scope of the PSSN definition to include Off-Axis field of view (FoV) points and apply this generalized metric for performance evaluation of the Thirty Meter Telescope (TMT). We first propose various possible choices for the PSSN definition and select one as our baseline. We show that our baseline metric has useful properties including the multiplicative feature even when considering Off-Axis FoV points, which has proven to be useful for optimizing the telescope error budget. Various TMT optical errors are considered for the performance evaluation including segment alignment and phasing, segment surface figures, temperature, and gravity, whose On-Axis PSSN values have previously been published by our group.
Document ID
20150008498
Document Type
Conference Paper
External Source(s)
Authors
Seo, Byoung-Joon
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Nissly, Carl
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Troy, Mitchell
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Angeli, George
(California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
May 20, 2015
Publication Date
June 27, 2010
Subject Category
Optics
Astronomy
Statistics and Probability
Meeting Information
SPIE Astronomical Telescopes and Instrumentation 2010(San Diego, CA)
Distribution Limits
Public
Copyright
Other
Keywords
optical performance metric
point source sensitivity
MACOS
optical modeling