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

doi:10.1117/12.3017980

26 August 2024 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

Author Affiliations +

Proceedings Volume 13100, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation VI; 131004J (2024) https://doi.org/10.1117/12.3017980
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

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.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Kenshi Yanagisawa, Reiko Furusho, Shiomi Nemoto, Toshihiro Kasuga, Yumi Iwashita, and Jun-ichi Watanabe "Spectrophotometric accuracy of spectra obtained from spectroscopic plates measured with a commercial flatbed scanner", Proc. SPIE 13100, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation VI, 131004J (26 August 2024); https://doi.org/10.1117/12.3017980

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available