Document detail
ID

oai:arXiv.org:2409.01629

Topic
Astrophysics - Instrumentation and...
Author
Yanagisawa, Kenshi Furusho, Reiko Nemoto, Shiomi Kasuga, Toshihiro Iwashita, Yumi Watanabe, Jun-ichi
Category

sciences: astrophysics

Year

2024

listing date

9/11/2024

Keywords
spectra results commercial scanner flatbed spectroscopic
Metrics

Abstract

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.

Yanagisawa, Kenshi,Furusho, Reiko,Nemoto, Shiomi,Kasuga, Toshihiro,Iwashita, Yumi,Watanabe, Jun-ichi, 2024, Spectrophotometric accuracy of spectra obtained from spectroscopic plates measured with a commercial flatbed scanner

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