섬유

computer-controlled polisher for advanced fabrication

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 309
the authors report the development of a new computer-controlled polisher (ccp) that produces exceptionally low mid-frequency error (approximately 35 angstrom rms), has been used to correct figure errors of less than mm period, has held an optic's surface to better than 0.02 $lambda$ p-p to within 2.0mm from the edge of an optic, and has produced surface finishes of $less than$ 10 angstrom rms on zerodur. this new ccp was used to produce the mirrors for the solar-a soft x-ray telescope (sxt), a unique telescope with two hyperbolic surfaces on a single zerodur substrate. during x-ray testing at nasa's marshall space flight center, the telescope demonstrated better encircled energy performance than previous solar x-ray telescopes because of the successful reduction of scatter, which in turn is a direct consequence of minimal mid-frequency figure error and low microroughness
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