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
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8 pages, 4 figures. Proceeding of SPIE, Astronomical Telescopes and Instrumentation 2016
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.
The InfraRed Imaging Spectrograph (IRIS) is the first-light client instrument for the Narrow Field Infrared Adaptive Optics System (NFIRAOS) on the Thirty Meter Telescope (TMT). Now approaching the end of its final design phase, we provide an overview of the instrument control software. The design is challenging since IRIS has interfaces with many systems at different stages of development (e.g., NFIRAOS, telescope control system, observatory sequencers), and will be built using the newly-developed TMT Common Software (CSW), which provides framework code (Java/Scala), and services (e.g., comma…
The InfraRed Imaging Spectrograph (IRIS) is a first-light instrument for the Thirty Meter Telescope (TMT) that will be used to sample the corrected adaptive optics field by the Narrow-Field Infrared Adaptive Optics System (NFIRAOS) with a near-infrared (0.8 - 2.4 $μ$m) imaging camera and integral field spectrograph. To better understand IRIS science specifications we use the IRIS data simulator to characterize relative photometric precision and accuracy across the IRIS imaging camera 34"x34" field of view. Because the Point Spread Function (PSF) varies due to the effects of anisoplanatism, we …
The InfraRed Imaging Spectrograph (IRIS) for TMT: Overview of innovative science programs
IRIS(红外成像光谱仪)是为未来30米望远镜(TMT)设计的第一台轻型近红外衍射极限成像仪和积分场光谱仪。IRIS经过优化,可以在宇宙时间的很大一部分进行天文学研究,从我们的太阳系到遥远的新形成的星系(Barton等人[1])。我们提出了一系列创新的科学案例,这些案例是IRIS在即将到来的太空和地面望远镜时代所独有的。我们专注于直接成像的系外行星大气的积分场光谱学,探索银河系中心的基础物理,测量10^4到10^10 Msun的超大质量黑洞质量,年轻恒星形成星系(1 < z < 5)和第一轻星系(6 < z < 12)的分辨光谱学,以及强引力透镜源的分辨光谱学来测量暗物质子结构。对于这些科学案例中的每一个,我们都使用IRIS模拟器(Wright et al. [2],Do et al. [3])来探索IRIS功能。为了突出独特的IRIS功能,我们还更新了积分场摄谱仪(IFS)在所有五个宽带滤波器(Z,Y,J,H,K)中的点和分辨源灵敏度,以实现每spatial 0.004”的最小空间尺度。我们简要地讨论了未来的发展计划的数据减少管道和快速查看软件的IRIS仪器套件。