The Role of Modeling in the Calibration of Chandra's Optics

D. Jerius, L. Cohen, R. J. Edgar, M. Freeman, John Hughes, D. Nguyen, W. A. Podgorski, M. Tibbetts, L. Van Speybroeck, P. Zhao

Research output: Contribution to journalConference article

11 Citations (Scopus)

Abstract

The mirrors flown in the Chandra Observatory are, without doubt, some of the most exquisite optics ever flown on a space mission. Their angular resolution is matched by no other X-ray observatory, existing or planned. The promise of that performance, along with a goal of achieving 1% calibration of the optics' characteristics, led to a decision early in the construction and assembly phase of the mission to develop an accurate and detailed model of the optics and their support structure. This model has served in both engineering and scientific capacities; as a cross-check of the design and a predictor of scientific performance; as a driver of the ground calibration effort; and as a diagnostic of the as-built performance. Finally, it serves, directly and indirectly, as the primary vehicle with which Chandra observers interpret the contribution of the optics' characteristics to their data. We present the underlying concepts in the model, as well as the mechanical, engineering and metrology inputs. We discuss its use during ground calibration and as a characterization of on-orbit performance. Finally, we present measures of the model's accuracy, where further improvements may be made, and its applicability to other missions.

Original languageEnglish (US)
Pages (from-to)402-410
Number of pages9
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5165
DOIs
StatePublished - May 3 2004
EventX-Ray and Gamma-Ray Instrumentation for Astronomy XIII - San Diego, CA, United States
Duration: Aug 3 2003Aug 5 2003

Fingerprint

Optics
Calibration
optics
Observatories
Observatory
Modeling
observatories
Engineering
mechanical engineering
Space Missions
space missions
Mechanical engineering
Metrology
angular resolution
Model
metrology
Driver
Observer
Predictors
Mirror

All Science Journal Classification (ASJC) codes

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

Keywords

  • AXAF
  • Chandra
  • Modeling
  • Optics

Cite this

Jerius, D. ; Cohen, L. ; Edgar, R. J. ; Freeman, M. ; Hughes, John ; Nguyen, D. ; Podgorski, W. A. ; Tibbetts, M. ; Van Speybroeck, L. ; Zhao, P. / The Role of Modeling in the Calibration of Chandra's Optics. In: Proceedings of SPIE - The International Society for Optical Engineering. 2004 ; Vol. 5165. pp. 402-410.
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Jerius, D, Cohen, L, Edgar, RJ, Freeman, M, Hughes, J, Nguyen, D, Podgorski, WA, Tibbetts, M, Van Speybroeck, L & Zhao, P 2004, 'The Role of Modeling in the Calibration of Chandra's Optics', Proceedings of SPIE - The International Society for Optical Engineering, vol. 5165, pp. 402-410. https://doi.org/10.1117/12.509378

The Role of Modeling in the Calibration of Chandra's Optics. / Jerius, D.; Cohen, L.; Edgar, R. J.; Freeman, M.; Hughes, John; Nguyen, D.; Podgorski, W. A.; Tibbetts, M.; Van Speybroeck, L.; Zhao, P.

In: Proceedings of SPIE - The International Society for Optical Engineering, Vol. 5165, 03.05.2004, p. 402-410.

Research output: Contribution to journalConference article

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AU - Cohen, L.

AU - Edgar, R. J.

AU - Freeman, M.

AU - Hughes, John

AU - Nguyen, D.

AU - Podgorski, W. A.

AU - Tibbetts, M.

AU - Van Speybroeck, L.

AU - Zhao, P.

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