A UV double pass spectrograph for monitoring stellar activity for the Keck Planet Finder

A UV double pass spectrograph for monitoring stellar activity for the Keck Planet Finder
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用于监测凯克行星探测器恒星活动的紫外双通光谱仪

DOI:
10.1117/12.2628149
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发表时间:
2022
期刊:
Proceedings of the SPIE
影响因子:
--
通讯作者:
Sirk, Martin
Sirk, Martin
中科院分区:
--
文献类型:
--
作者:
Baker, Ashley;Gibson, Steven;Grillo, Jason;Ishikawa, Yuzo;Howard, Andrew W.;Halverson, Samuel;Rider, Kodi;Jelinsky, Sharon;Deich, Will;Sirk, Martin

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我们提出了一个紧凑的,双通交叉色散阶梯光栅摄谱仪,是专门定制的,以覆盖383 nm至403 nm的光谱范围和记录R 16,000光谱的恒星色球Ca II H和K线。这个“H和K”光谱仪是作为Keck行星探测器(KPF)的一个子系统开发的,KPF是Keck I的一个非常精确的光学(440 - 870 nm)径向速度光谱仪,计划于2022年秋季投入使用,其科学目标是测量系外行星的精确质量。H和K光谱仪将与KPF同时进行观测,以独立跟踪KPF观测的宿主恒星的色球活动,预计这将在长时间尺度上主导KPF测量平台。H和K光谱仪是从KPF光纤注入单元光纤馈送的,在其工作光谱范围内总吞吐量为4-7%(望远镜顶部到CCD)。在这里,我们详细介绍了光学设计的权衡,机械设计,并从对准和集成测试的第一个结果。
We present a compact, double-pass cross-dispersed echelle spectrograph that is tailored specifically to cover the 383 nm to 403 nm spectral range and record R∼16,000 spectra of the stellar chromospheric Ca II H and K lines. This ‘H and K’ spectrometer was developed as a subsystem of the Keck Planet Finder (KPF), which is an extremely precise optical (440 - 870 nm) radial velocity spectrograph for Keck I, scheduled for commissioning Fall 2022, with the science objective of measuring precise masses of exoplanets. The H and K spectrometer will observe simultaneously with KPF to independently track the chromospheric activity of the host stars that KPF observes, which is expected to dominate the KPF measurement floor over long timescales. The H and K Spectrometer is fiber fed from the KPF fiber injection unit with total throughput of 4-7% (top of telescope to CCD) over its operating spectral range. Here we detail the optical design trade offs, mechanical design, and first results from alignment and integration testing.
DOI: 10.1086/133891
发表时间: 1997
影响因子: 3.5
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影响因子: --
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