Testing method of off-axis parabolic cylinder mirror for FIMS

K. S. Ryu, J. Edelstein, J. B. Song, Y. W. Lee, J. S. Chae, K. I. Seon, I. S. Yuk, E. Korpela, J. H. Seon, U. W. Nam, W. Han, K. W. Min

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Abstract

Far-ultraviolet IMaging Spectrograph (FIMS) is a far ultraviolet diffuse imaging spectrometer which will be launched in 2002 as the main payload of KAISTSAT-4. We have designed the optics for observing diffuse emission sources by employing an off-axis parabolic cylinder mirror in front of a slit which guides lights to a diffraction grating. The reflective diffraction grating is an ellipse of rotation providing angular resolution. We describe our plan to measure the off-axis parabolic mirror and our initial experiments to establish the measurement technique. To assist manufacture of the off-axis parabolic cylinder, a cylindrical wavefront generated using computer generated hologram (CGH) will be used during the polishing to check errors in surface profile using the Fizeau interferometer.

Original languageEnglish
Pages (from-to)312-319
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume4231
Issue number1
DOIs
Publication statusPublished - 2000 Oct 6

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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    Ryu, K. S., Edelstein, J., Song, J. B., Lee, Y. W., Chae, J. S., Seon, K. I., Yuk, I. S., Korpela, E., Seon, J. H., Nam, U. W., Han, W., & Min, K. W. (2000). Testing method of off-axis parabolic cylinder mirror for FIMS. Proceedings of SPIE - The International Society for Optical Engineering, 4231(1), 312-319. https://doi.org/10.1117/12.402822