An optical grism for education is fabricated and tested. It is composed of a transmission grating as dispersion element and a prism as diffraction angle compensation device. The transmission grating is Edmundoptics #49-584(spatial frequency 600 lines/mm, dimension 50 mm × 50 mm). The prism is the fused silica type with angles (41.3 , -48.7 , -90 ). The grism device is fabricated by bonding the transmission grating and the prism with an optical adhesive. The zig for assembling the grism, telescope and camera is composed of an aluminum tube, an aluminum disk ring and a T-ring camera adaptor. The fabricated optical grism spectrograph is tested in laboratory using Halogen lamp and Neon lamp with DSLR camera. And the grism assembled with reflector telescope is tested in a field using stellar light. The results show good agreements with design parameters. The wavelength coverage range of the grism is 250 nm at the un-deviated wavelength of 506 nm. The wavelength resolution is 0.11 nm/pixel.

ABSTRACT
1. 서론
2. 그리즘 이론 및 설계
3. 그리즘 제작
4. 실험실 시험
    4.1. 광학계와 장치
    4.2. 할로겐램프 시험 결과
    4.3. 네온램프 시험 결과
5. 천체관측 시험
    5.1. 광학계와 장치
    5.2. 플레이아데스성단의 스펙트럼 촬영 결과
6. 결론
참고 문헌

• 이동하(경북대학교 IT대학 전자공학부) | D. -H. LEE (School of Electronic Engineering, Kyungpook National University)
• 송재원(경북대학교 IT대학 전자공학부) | J. -W. SONG (School of Electronic Engineering, Kyungpook National University) 교신저자
• 윤태석(경북대학교 자연과학대학 천문대기과학과) | T. S. YOON (Department of Astronomy & Atmospheric Sciences, Kyungpook National University)