Interferometric hartmann wave-front sensing for active optics at the 6.5-m conversion of the multiple mirror telescope.
Interferometric hartmann wave-front sensing for active optics at the 6.5-m conversion of the multiple mirror telescope.
复制标题
干涉哈特曼波前传感，用于多镜望远镜 6.5 米转换时的主动光学器件。
DOI：
10.1364/ao.41.003781
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发表时间：
2002
期刊：
影响因子：
1.9
通讯作者：
S. West
中科院分区：
文献类型：
--
作者：
S. West
对经典哈特曼光学测试进行的很少使用的干涉测量修改正在 6.5 米多镜望远镜 (MMT) 天文台用于主动光学校正。该技术产生紧凑的干涉点，其位置取决于离散波前相位差误差。衍射模型说明了干涉斑的形成。估计了由于大气视宁度造成的波前采样的限制。给出了两种数据缩减矩阵策略。准直和主镜形状的单次校正产生近乎衍射极限的望远镜图像。可以可靠地检测幅度从几纳米到几微米的波前多项式系数。
A little-used interferometric modification to the classical Hartmann optical test is being used for active optics corrections at the 6.5-m Multiple Mirror Telescope (MMT) Observatory. The technique produces compact interference spots whose positions depend on discrete wave-front phase-difference errors. A diffraction model illustrates the formation of interference spots. The limitations on wave-front sampling that are due to atmospheric seeing are estimated. Two data reduction matrix strategies are given. A single correction of collimation and primary mirror figure produces a nearly diffraction-limited telescope image. Wave-front polynomial coefficients ranging from several nanometers to several micrometers in amplitude are reliably detected.