用于MAIA成像仪的大型帧转移探测器
Large Frame-Transfer Detectors for the MAIA Imager
摘要：
MAIA是一种新的快节奏三通道测光仪器。它安装在西班牙拉帕尔马的Roque de Los Muchachos天文台的1.2米墨卡托望远镜上。MAIA由3台摄像机组成，可在3个不同的色带（u、g和r）中同时观察相同的9.4 x 14.1弧分视场。每台相机都基于一个2kx 6 k像素的超大帧传输探测器（CCD 42-C 0），专为快速时间序列测光而设计。这些CCD最初由e2 v为欧空局取消的爱丁顿太空任务开发，现在永久借给比利时鲁汶大学天文研究所。MAIA的采集系统使用一个ARC GEN-III控制器，自定义编程允许三个CCD中的每一个的不同曝光时间。预定义的序列以最短的积分时间同步每个读出。在曝光结束时未读出的探测器继续积分，并且可以在随后的周期中读出。这种读取方法充分利用了CCD 42-C 0探测器的帧传输功能，并允许优化每个波段的曝光时间。这然后在3个臂中的每一个中给出类似的曝光深度，尽管UV通道通常看到少得多的通量。我们提出的CCD 42-C 0探测器，他们的特点，包括其非线性的彻底分析，和MAIA数据采集系统。
英文摘要：
MAIA, the Mercator Advanced Imager for Asteroseismology, is a new fast-cadence 3-channel photometric instrument. It is installed on the 1.2-m Mercator telescope at the Roque de Los Muchachos Observatory in La Palma, Spain. MAIA comprises 3 cameras that simultaneously observe the same 9.4 x 14.1 arcmin field in 3 different colour bands (u, g and r). Each camera is based on a very large frame-transfer detector (CCD42-C0) of 2kx6k pixels, specially designed for rapid time-series photometry. These CCDs were originally developed by e2v for ESA's cancelled Eddington space mission and are now on permanent loan to the Institute of Astronomy of the KU Leuven, Belgium. The acquisition system of MAIA uses a single ARC GEN-III controller, custom programmed to allow differing exposure times for each of the three CCDs. Predefined sequences synchronize each read-out with the shortest integration time. Detectors that are not read-out at the end of an exposure continue integrating and can be read-out in one of the subsequent cycles. This read method takes full advantage of the frame-transfer functionality of the CCD42-C0 detectors and allows optimisation of the exposure times for each wavelength band. This then gives a similar exposure depth in each of the 3 arms despite the fact that the UV channel typically sees much less flux. We present the CCD42-C0 detectors, their characterisation, including a thorough analysis of their non-linearity, and the MAIA data-acquisition system.
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