论文标题
Spica-ft：Chara Array的新边缘追踪器
SPICA-FT: The new fringe tracker of the CHARA array
论文作者
论文摘要
Spica-ft是Chara/Spica仪器的一部分，该仪器将可见的6T纤维仪器（Spicavis）与H频段6T条纹传感器结合在一起。 Spica-ft是成对的ABCD集成光学组合仪。芯片安装在MIRC-X仪器中。 MIRC-X光谱仪可以由经典的6T纤维组合仪或Spica-ft集成光学组合仪馈送。 Spica-ft还集成了一个专用的边缘跟踪软件，称为OPD控制器，通过专用渠道与主要延迟线进行通信。我们介绍了集成的光学芯片的设计，其在MIRC-X中的实现以及组 - 延迟和相位延迟控制循环的软件体系结构。最终的集成光学芯片和软件已在实验室中充分表征。集成光学组合仪的首次开放测试始于2020年。我们在2022年春季和夏季继续对整个系统（Combiner + Software）进行了单套测试。我们提出了主要结果，并推断出Spica-ft的初步性能。
SPICA-FT is part of the CHARA/SPICA instrument which combines a visible 6T fibered instrument (SPICAVIS) with a H-band 6T fringe sensor. SPICA-FT is a pairwise ABCD integrated optics combiner. The chip is installed in the MIRC-X instrument. The MIRC-X spectrograph could be fed either by the classical 6T fibered combiner or by the SPICA-FT integrated optics combiner. SPICA-FT also integrates a dedicated fringe tracking software, called the opd-controller communicating with the main delay line through a dedicated channel. We present the design of the integrated optics chip, its implementation in MIRC-X and the software architecture of the group-delay and phase-delay control loops. The final integrated optics chip and the software have been fully characterized in the laboratory. First on-sky tests of the integrated optics combiner began in 2020. We continue the on-sky tests of the whole system (combiner + software) in Spring and Summer 2022. We present the main results, and we deduce the preliminary performance of SPICA-FT.
