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Space Studies Board Annual Report 2002 (2003) / Chapter Skim
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4 Short Report
Pages 101-104

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From page 101...
... 85~. The report defined the wide-angle astrometric precision necessary for AIM to achieve the specified scientific goals: "The mission requirement would be to measure positions of widely separated objects to a visual magnitude of 20 with a precision of 30 millionths of an arcsecond; a more challenging goal would be to measure positions with a precision of 3 millionths of an arcsecond" (p.
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From page 102...
... These imaging and pulling studies are interesting in their own right, but they are not integral to the core astronomical goals described in the 1991 and 2001 AASC reports, such as, for example, mapping of galactic structure, calibration of the cosmological distance scale, and detection of extrasolar planets. At the May 1, 2002, CAA meeting, the SIM project team from JPL reported that current component performance suggests the project' s ability to meet the 2001 UVOIR Panel report' s stated wide-angle requirement of 10 microarcseconds and to exceed the goal (3.2 microarcseconds, compared to the goal of 4 microarcseconds)
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From page 103...
... In making this assessment, the CAA compared the reported astrometric performance of the redesigned SIM with the performance requirements and goals stated in the report of the 2001 AASC's UVOIR Panel, and not with the less exacting wide-angle requirement level stated in the decade-old 1991 AASC report as was apparently expected by the JPL project team based on its May 2002 presentation to the CAA. This distinction should not matter in practice since (1)
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From page 104...
... McElroy Chair, Space Studies Board John P Huchra Chair, Board on Physics and Astronomy
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Key Terms

  • uvoir panel
  • project team
  • scientific capabilities
  • space studies
  • sim project

  • survey committee
  • redesigned sim
  • estimated mission
  • interferometry mission
  • aasc reports

  • astrophysics survey
  • space interferometry
  • mission cost
  • jpl project
  • estimated cost

  • galactic structure
  • astrophysical goals
  • originally envisioned
  • terrestrial planet
  • jpl team

  • redesigned mission
  • planet finder
  • core astronomical
  • mission category
  • infrared astronomy

  • microarcseconds requirement
  • chair john
  • redesigned space
  • synthesis imaging
  • performance goal


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