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arXiv 2409.01629astro-ph.IM
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用商用平板扫描仪测量的光谱底片所得光谱的分光光度精度

Spectrophotometric accuracy of spectra obtained from spectroscopic plates measured with a commercial flatbed scanner

Kenshi Yanagisawa, Reiko Furusho, Shiomi Nemoto, Toshihiro Kasuga, Yumi Iwashita, Jun-ichi Watanabe

AI总结:

本文通过商用平板扫描仪测量光谱底片并与CCD光谱对比,证明其精度可达2.5%,纠正了扫描仪不适用及精度仅约10%的传统观点,为光谱底片数字化存档提供依据。

摘要:

将从光谱照相底片中恢复的强度光谱与CCD光谱进行了比较,发现两者之间的差异为2.5%。测量使用的是商用平板扫描仪,而非显微密度计。结果表明以下两种说法是不准确的:(1)光谱底片的正确测量需要显微密度计,商用平板扫描仪不够用;(2)光谱底片的分光光度精度约为10%。这些结果将鼓励创建和发布光谱底片的数字档案。本文介绍了光谱底片的测量、从照相密度光谱恢复强度光谱的方法、与CCD光谱的比较结果,并讨论了使用商用平板扫描仪获得高精度光谱的原因。

英文摘要:

The intensity spectra recovered from the spectroscopic photographic plates were compared with the CCD spectra, and we found the difference between the two was 2.5%.The measurements were taken using a commercial flatbed scanner instead of a microdensitometer. The results indicate that the following two statements are inaccurate: (1) Correct measurement of spectroscopic plates requires a microdensitometer, and a commercial flatbed scanner is insufficient; (2) The spectrophotometric accuracy of spectroscopic plate is approximately 10% accurate. These results will encourage the creation and publication of a digital archive of spectroscopic plates. This paper presents the measurement of spectroscopic plates, the method of recovering intensity spectra from photographic density spectra, the results of comparison with CCD spectra, and discusses the causes of the high accuracy spectra obtained with a commercial flatbed scanner.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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