Focal Plane Technologies for LSST
Focal Plane Technologies for LSST
复制标题
LSST 焦平面技术
DOI：
10.1117/12.456727
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发表时间：
2002
期刊：
影响因子：
--
通讯作者：
J. Tyson
中科院分区：
文献类型：
--
作者：
M. Lesser;J. Tyson
大型综合巡天望远镜（LSST）的基线设计需要一个超过2千兆像素的探测器镶嵌图，覆盖直径为55厘米的焦平面，采样时间为0.2弧秒。通过利用天文望远镜仪器通常不需要的先进概念，这台望远镜的相机和探测器包将受益匪浅。对于检测器组件，这些概念包括低成本、具有集成电子模块的背照式CMOS或CCD检测器、允许更少但更大的单个传感器的弯曲检测器、保持高MTF和全阱容量的小像素、抗晕技术、完全可对接封装以及接近室温操作。相机可能需要一个低热导率的充气杜瓦瓶，以减少窗口上的大气负荷，可互换和紧凑的光学滤波器，以及灵活的内部快门。在本文中，我们讨论这些问题有关的LSST焦平面技术。
The baseline design for the Large Synoptic Survey Telescope (LSST) requires a detector mosaic of over 2 Gigapixels covering a 55 cm diameter focal plane with 0.2 arcsec sampling. The camera and detector package for this telescope will benefit greatly by utilizing advanced concepts not normally required for astronomical telescope instrumentation. For the detector assembly, these concepts include low-cost, back illuminated CMOS or CCDs detectors with integrated electronic modules, curved detectors which would allow fewer but larger individual sensors, small pixels which maintain high MTF and full well capacity, anti-blooming techniques, fully-buttable packaging, and near room temperature operation. The camera may require a low thermal conductance gas-filled dewar to reduce atmosphere loading on the window, interchangeable and compact optical filters, and a flexible internal shutter. In this paper we discuss these issues relating to LSST focal plane technology.