Adaptive optics performance simulation on the basis of MASS/DIMM data obtained on Mt. Shatdzhatmaz in 2009–2011

Boris S. Safonov

doi:10.1117/12.925711

13 September 2012 Adaptive optics performance simulation on the basis of MASS/DIMM data obtained on Mt. Shatdzhatmaz in 2009–2011

Boris S. Safonov

Author Affiliations +

Proceedings Volume 8447, Adaptive Optics Systems III; 84475K (2012) https://doi.org/10.1117/12.925711
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

Abstract

On the basis of 95500 MASS/DIMM measurements of optical turbulence profile obtained on Mt. Shatdzhatmaz in 2009-2011 we have constructed 2 atmosphere models for this summit: one consisting of 9 typical turbulence profiles, and other of 300 randomly selected profiles. Profiles represent Cn2 and wind speed values estimated at 13 standard MASS altitudes. We discuss advantages and disadvantages of these models from the point of view of AO simulation. We used these models as input parameters in analytical simulation (PAOLA tool) of AO system of future 2.5-m telescope of SAI. This simulation was used to estimate optimal parameters of this system and performance characteristics corresponding to these parameters. Second 300-profiles atmosphere model allowed to evaluate the performance in terms of statistical distributions of metrics. E.g. for subaperture size 0.35 m and optimizable exposure (lower limit 2 ms), the NGS AO system will deliver Strehl ratio more than 0.46 in R-band using R=13 guide star for 10% of time.

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Boris S. Safonov "Adaptive optics performance simulation on the basis of MASS/DIMM data obtained on Mt. Shatdzhatmaz in 2009–2011", Proc. SPIE 8447, Adaptive Optics Systems III, 84475K (13 September 2012); https://doi.org/10.1117/12.925711

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KEYWORDS

Adaptive optics

Atmospheric modeling

Device simulation

Point spread functions

Stars

Telescopes

Atmospheric optics

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