Basic Study on the System of Optical Camera Arrays with Wide Field of View for Transient Astronomical Objects

本研究的主要目的是研制一种具有大视场的光学望远镜阵列的基本系统。这种望远镜阵列可以在地面上连续监测大范围的天空。因此，该系统可以检测到外观一般不可预测的瞬态物体。为了实现这个系统，我们需要开发三个项目：即：(1)研制大视场光学望远镜；(2)研制大探测面积CCD作为焦平面探测器；(3)研制处理大质量成像数据的软件。这笔有限的拨款是为了开发一种宽视场的光学望远镜，而我们只使用传统的CCD和软件。我们研制了视场5度、直径20厘米的折射光学望远镜。如此大的望远镜视场迄今为止还没有实现过。我们先在实验室里对这台望远镜做了基本的测试，然后在八崎山的田野里做了第二次测试。我们观察到…一个疏散星团，M45（或“斯巴鲁”）。我们在10秒的曝光时间内以0.1等的精度探测到一颗12等的恒星。噪声级对应于60e，但现在已经提高到30e。在没有机械移动系统的情况下，可以拍摄任何天空图像，但可以使用CCD电子系统跟踪焦平面上的天空图像。5度以内的图像清晰，精度为几角秒。我们开发了一种在CCD驱动系统中加入TDI的驱动系统。这样，我们就可以在没有移动望远镜系统的情况下，在野外拍摄清晰的图像。目前的光学望远镜有一个新的系统。因此，我们提出了一项通用专利。如果将来我们制造一个由100台或更多的望远镜组成的望远镜阵列，我们可以监视一个立体度的天空。虽然我们已经实现了主要的开发目标，但我们还需要开发另外两个项目以供将来的研究；即：(1)具有宽视场的CCD和(2)处理大量成像数据的软件。少

The main object of this research is to develop a basic system of the optical telescope array with wide field of view. This telescope array can monitor wide field of sky on the ground continuously. Therefore, this system can detect the transient objects whose appearance are not predictable in general. We have to develop three items in order to realize this system as follows ; that is, (1) to develop an optical telescope with wide field of view, (2) to develop a CCD with large detection area as a forcal plane detector and (3) to develop the software for processing mass imaging data. This limited grant is to develop an optical telescope with wide field of view, while we used only conventional CCD and software.We have develop the refractive optical telescope with a field of 5 degrees and 20 cm in diameter. Such wide field of telescope has not been realized so far. We have done basic tests of this telescope firstly in the laboratory and secondary in the fields on Mt.Yatsugatake. We observed … More an open cluster, M45 (or "Subaru"). We detected a 12 magnitude star with a precision of 0.1 magnitude in 10 second exposure time. The noise level corresponded to 60e, but now it has been improved to be 30e. Any sky image can be taken without mechanical moving system, but the sky image on the focal plane can be followed with electronics system of CCD.The image within 5 degrees are lake clearly with a precision of a few arc seconds. We have developed a driving system with TDI in the CCD driving system. Thus we could take a clear image in the fields without moving system for the telescope. The present optical telescope has a new system. Therefore we have proposed a patent for general usage. if we make a telescope array consisting of 100 telescopes or more in future, we can monitor the sky of one steradian.Although we have achieved the main object to be developed, we have to develop other two items for futute study ; that is, (1) CCD with a wide field of view and (2) software for processing mass imaging data. Less