ATST enclosure: seeing performance, thermal modeling, and error budgets

Nathan E. Dalrymple; Jacobus M. Oschmann Jr.; Robert P. Hubbard

doi:10.1117/12.551530

16 September 2004 ATST enclosure: seeing performance, thermal modeling, and error budgets

Nathan E. Dalrymple, Jacobus M. Oschmann Jr., Robert P. Hubbard

Proceedings Volume 5497, Modeling and Systems Engineering for Astronomy; (2004) https://doi.org/10.1117/12.551530
Event: SPIE Astronomical Telescopes + Instrumentation, 2004, Glasgow, United Kingdom

Abstract

The enclosure for the Advanced Technology Solar Telescope (ATST) is both a wind shield and a source of seeing. Its design must minimize self-induced seeing while remaining within cost constraints and balancing with other error budget items. We report the methods used to quantify seeing performance, including thermal modeling, seeing estimation, and systems engineering error budgets. Thermal modeling is performed using a commercial software package that applies measured site weather data to a CAD-generated enclosure model. Seeing estimation is performed using a simple aerodynamic treatment. The results, along with measured site wind and temperature distributions, are combined into a "bottom-up" performance prediction using Monte Carlo techniques.

Citation Download Citation

Nathan E. Dalrymple, Jacobus M. Oschmann Jr., and Robert P. Hubbard "ATST enclosure: seeing performance, thermal modeling, and error budgets", Proc. SPIE 5497, Modeling and Systems Engineering for Astronomy, (16 September 2004); https://doi.org/10.1117/12.551530

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