Seeing the limited coupling of starlight into single‐mode fiber with a small telescope
Seeing the limited coupling of starlight into single‐mode fiber with a small telescope
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用小型望远镜观察星光与单模光纤的有限耦合
DOI：
10.1002/asna.20220080
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发表时间：
2023
影响因子：
0.9
通讯作者：
Halverson, Samuel
中科院分区：
文献类型：
--
作者：
Sliski, David H.;Blake, Cullen H.;Eastman, Jason D.;Halverson, Samuel
光纤连接到望远镜为光谱仪提供了许多优势，这些光谱仪旨在通过精确的径向速度测量来探测和表征太阳系外行星。在视限范围内，通常使用多模光纤，以便可以捕获大量的星光。在近衍射极限的情况下，无论是使用自适应光学系统还是使用位于理想位置的小型望远镜，都可以将星光有效地耦合到更小的单模光纤中。一般来说，为单模光纤输入设计的光谱仪比为多模光纤输入设计的光谱仪成本低得多。我们描述的测试结果耦合星光从一个70厘米的望远镜在山。霍普金斯，亚利桑那州的单模光纤的MINERVA-红色光谱仪在850纳米的波长，使用低速倾斜/倾斜图像稳定系统，包括所有商业，现成的组件。我们发现，大约0.5%的可用星光被耦合到单模光纤下看到的条件下，典型的天文台托管小型望远镜，这是接近理论预期。我们讨论了小型望远镜与廉价的高分辨率光谱仪配对的科学机会，以及应显着提高MINERVA-Red系统耦合效率的升级路径。
An optical fiber link to a telescope provides many advantages for spectrometers designed to detect and characterize extrasolar planets through precise radial velocity measurements. In the seeing‐limited regime, a multi‐mode fiber is typically used so that a significant amount of starlight may be captured. In the near‐diffraction‐limited case, either with an adaptive optics system or with a small telescope at an excellent site, efficiently coupling starlight into a much smaller, single‐mode fiber may be possible. In general, a spectrometer designed for single‐mode fiber input will be substantially less costly than one designed for multi‐mode fiber input. We describe the results of tests coupling starlight from a 70 cm telescope at Mt. Hopkins, Arizona into the single‐mode fiber of the MINERVA‐Red spectrometer at a wavelength of ∼$$ \sim $$850 nm using a low‐speed tip/tilt image stabilization system comprising all commercial, off‐the‐shelf components. We find that approximately 0.5%$$ \% $$ of the available starlight is coupled into the single‐mode fiber under seeing conditions typical for observatories hosting small telescopes, which is close to the theoretical expectation. We discuss scientific opportunities for small telescopes paired with inexpensive, high‐resolution spectrometers, as well as upgrade paths that should significantly increase the coupling efficiency for the MINERVA‐Red system.
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DOI：
--
发表时间：
2014
期刊：
Astronomical Telescopes and Instrumentation
影响因子：
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作者：
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发表时间：
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期刊：
Astronomical Telescopes + Instrumentation
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DOI：
--
发表时间：
2018
期刊：
Astronomical Telescopes + Instrumentation
影响因子：
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作者：
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影响因子：
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作者：
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DOI：
--
发表时间：
2018
期刊：
Astronomical Telescopes + Instrumentation
影响因子：
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作者：
T. Feger;C. Schwab;B. C. K. Kuo Tiong;M. Ireland;A. Rains;D. Coutts
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