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High-accuracy differential image motion monitor measurements for the Thirty Meter Telescope site testing program

机译:三十米望远镜现场测试程序的高精度差分图像运动监视器测量

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摘要

Differential image motion monitors (DIMMs) have become the industry standard for astronomical sitecharacterization. The calibration of DIMMs is generally considered to be routine, but we show that particular care must be paid to this issue if high-accuracy measurements are to be achieved. In a side by side comparison of several DIMMs, we demonstrate that with proper care we can achieve an agreement between the seeing measurements of two DIMMS operating under the same conditions to better than +-0.02 arc sec.
机译:差分图像运动监视器(DIMM)已成为天文现场特征的行业标准。 DIMM的校准通常被认为是常规的,但是我们表明,要实现高精度测量,必须格外小心。通过对多个DIMM的并排比较,我们证明了通过精心维护,我们可以使在相同条件下工作的两个DIMM的可见测量结果之间的一致性高于±-0.02 arc sec。

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