Multi-object imaging spectroscopy with a multi-scan Fabry-Perot

这项研究是为了证明一个多扫描法布里-珀罗成像光谱仪可以用于10多个不同波长范围的天文观测。我们使用液晶标准子作为法布里佩罗的基础部分，而机械驱动的标准子在天文学中更受欢迎。液晶标准子比机械标准子更稳定，尤其是在温度变化和机械振动下。液晶标准子也很便宜。我们用自己的评估仪器评估了一个标准子，并表明我们的宽波长覆盖标准子具有12或更大的精细度，符合我们的要求。，而标准子的透明度不是很高。我们还确认了标准子易于维护。透明度小的原因是我们只使用了一个标准子来覆盖我们打算用两个标准子覆盖的波长范围。这主要是因为我们的预算有限。由于标准子的波长覆盖范围变大，使得在该波长范围内制作具有恒定反射率的涂层变得困难。但是这个标准子很有用，可以用来制作多扫描法比-佩罗成像光谱仪。我们修改了一个二色镜相机，这样我们就可以使用它的标准龙。为了进行真正的天文观测，我们需要窄带滤光片。但是可以针对每个科学课题进行筛选，这是我们以后可以进行的。

This research is to show that a multi-scanning Fabry-Perot imaging spectrograph for more than 10 different wavelength ranges can be used for astronomical observations. We used a liquid crystal etalon for the basic part of the Fabry Perot, while etalons with mechanical drives are more popular in astronomy. A liquid crystal etalon is more stable compared with a mechanical one especially against temperature variation and mechanical vibrations. A liquid crystal etalon is also inexpensive. We evaluated an etalon with our own evaluation apparatus, and showed that our wide-wavelength coverage etalon has finesse of 12 or larger which meets our specifications., while the transparency of the etalon is not very high. We also confirmed that the etalon is easy to maintain. The reason for small transparency is that we used only one etalon to cover the wavelength range which we intended to cover with two etalons. This is mainly because of our limited budget. Since the wavelength coverage for a etalon became large, it was difficult to make coating with constant reflectivity for the wavelength range. But the etalon was useful enough to try to make a multi-scanning Fabty-Perot imaging spectrograph. We modified a dichroic-mirror camera so that we can use it with the etalon. In order to carry out real astronomical observations, we need narrow-band filters. But The selection of the filters can be made for each scientific topic, which we can carry out in future.