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arXiv 1608.01693astro-ph.IM
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TMT天体测量误差预算到IRIS设计的流程

Flowdown of the TMT astrometry error budget(s) to the IRIS design

Matthias Schoeck, David Andersen, John Rogers, Brent Ellerbroek, Eric Chisholm, Jennifer Dunn, Glen Herriot, James Larkin, Anna Moore, Ryuji Suzuki, James Wince… 展开作者

Matthias Schoeck, David Andersen, John Rogers, Brent Ellerbroek, Eric Chisholm, Jennifer Dunn, Glen Herriot, James Larkin, Anna Moore, Ryuji Suzuki, James Wincentsen, Shelley Wright

摘要:

TMT在其顶级需求文档中定义了绝对和差分天体测量要达到的精度。由于不同类型天体测量观测的复杂性,这些要求不能直接用于指定系统设计参数。因此,TMT天体测量工作组为各种科学案例制定了详细的天体测量误差预算。这些误差预算详细说明了天体测量误差如何通过校准、观测和数据处理过程传播。预算需要被压缩成一组特定的需求,每个子系统团队可以使用这些需求来进行设计。我们展示了如何从误差预算到设计要求的这种流程是TMT的第一光红外成像光谱仪(IRIS)仪器的情况下实现的。

英文摘要:

TMT has defined the accuracy to be achieved for both absolute and differential astrometry in its top-level requirements documents. Because of the complexities of different types of astrometric observations, these requirements cannot be used to specify system design parameters directly. The TMT astrometry working group therefore developed detailed astrometry error budgets for a variety of science cases. These error budgets detail how astrometric errors propagate through the calibration, observing and data reduction processes. The budgets need to be condensed into sets of specific requirements that can be used by each subsystem team for design purposes. We show how this flowdown from error budgets to design requirements is achieved for the case of TMT's first-light Infrared Imaging Spectrometer (IRIS) instrument.

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