Publications of The Korean Astronomical Society (천문학논총)

The Korean Astronomical Society (한국천문학회)
권호 표지
DOI QR코드

DOI QR Code

AN OPTICAL FIBER FEED LITTROW-MOUNTED SPECTROMETER

광섬유 피드 리트로마운트형 분광계

  • Bae, J.H. (School of Electronic Engineering, Kyungpook National University) ;
  • Song, J.W. (School of Electronic Engineering, Kyungpook National University) ;
  • Yoon, T.S. (Department of Astronomy & Atmospheric Sciences, Kyungpook National University)
  • 배지훈 (경북대학교 IT대학 전자공학부) ;
  • 송재원 (경북대학교 IT대학 전자공학부) ;
  • 윤태석 (경북대학교 자연과학대학 천문대기과학과)
  • Received : 2012.03.12
  • Accepted : 2012.07.13
  • Published : 2012.07.31
Download PDF
⟨ Previous Next ⟩

Abstract

A low-dispersion fiber feed Littrow-mounted grating spectrometer for education was designed and fabricated. The dispersion element is a reflective type blazed grating Edmundoptics NT 46-075 (spatial frequency 600 lines/mm, dimension $30mm{\times}30mm$, blazed angle 8.6 degree). The optical fiber coupler module for optical guiding from telescope to spectrometer is composed of a multi-mode FC connector - FC connector optical fiber patch cord (core/cladding diameter $50{\mu}m/125{\mu}m$) and two 1.25" throw-tube couplers. The lens for collimating and imaging is a general purpose focal length 50 mm camera lens (f/1.8). The device for optical path control is a rectangular prism (size $25mm{\times}25mm$). The imaging camera sensor is a Meade DSI Pro 2 CCD sensor (black and white, $752{\times}582$ pixels and pixel size $8.3{\mu}m{\times}8.6{\mu}m$). Softwares for data logging and analysis consist of Meade Autostar Suite, NIH imagej and Vernier Logger Pro 3. The wavelength coverage range of the spectrometer is 205 nm at central wavelength 550 nm. The wavelength resolution is 1.7 nm.

Keywords

References

  1. 김준호, 2012, 소형 분광계를 이용한 밝은 별의 분광선 관측, 경북대학교 천문대기과학과 2012학년도 학부졸업논문
  2. Ramsey I. W., et al., 1981, Telescope Performance of a Fiber Coupled Spectrograph, Bull. American Astron. Soc., 12, 836(A)