High-frequency wavefront structure and its effects on the detection of faint companions using adaptive optics

Maud P. Langlois, David G. Sandler, Patrick T. Ryan, Donald W Mccarthy

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

This paper looks at the detection limits using the new adaptive optics system on the 3.5m SOR telescope, reported by P. Ryan et al. at this conference. We discuss recent advances in our understating of the nature of high frequency wavefront structure. We analyze the various sources of high- frequency wavefront error, arising from residual adaptive optics errors, and other sources of scattered light. We characterize the AO system efficiency in the K band in terms of profile, noise level and noise time correlation. A sharp edge coronograph was used and it improved the performance as much as needed to detect brown dwarfs. Finally we give the exposure time required to detect such companions using the actual AO associated with the coronographic device, and we also point out what needs to be improved on the AO system as well as on the coronographic device in order to reach the level required for detecting exoplanets.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Pages189-200
Number of pages12
Volume3353
DOIs
StatePublished - 1998
EventAdaptive Optical System Technologies - Kona, HI, United States
Duration: Mar 23 1998Mar 23 1998

Other

OtherAdaptive Optical System Technologies
CountryUnited States
CityKona, HI
Period3/23/983/23/98

Fingerprint

Adaptive optics
Adaptive Optics
Wavefronts
adaptive optics
Wave Front
Light sources
extrasolar planets
extremely high frequencies
Telescopes
Exoplanets
Detection Limit
telescopes
Telescope
profiles

Keywords

  • Adaptive optics
  • Companions
  • Coronograph
  • PSF
  • Scattered light

ASJC Scopus subject areas

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

Cite this

Langlois, M. P., Sandler, D. G., Ryan, P. T., & Mccarthy, D. W. (1998). High-frequency wavefront structure and its effects on the detection of faint companions using adaptive optics. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 3353, pp. 189-200) https://doi.org/10.1117/12.321676

High-frequency wavefront structure and its effects on the detection of faint companions using adaptive optics. / Langlois, Maud P.; Sandler, David G.; Ryan, Patrick T.; Mccarthy, Donald W.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3353 1998. p. 189-200.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Langlois, MP, Sandler, DG, Ryan, PT & Mccarthy, DW 1998, High-frequency wavefront structure and its effects on the detection of faint companions using adaptive optics. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 3353, pp. 189-200, Adaptive Optical System Technologies, Kona, HI, United States, 3/23/98. https://doi.org/10.1117/12.321676
Langlois MP, Sandler DG, Ryan PT, Mccarthy DW. High-frequency wavefront structure and its effects on the detection of faint companions using adaptive optics. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3353. 1998. p. 189-200 https://doi.org/10.1117/12.321676
Langlois, Maud P. ; Sandler, David G. ; Ryan, Patrick T. ; Mccarthy, Donald W. / High-frequency wavefront structure and its effects on the detection of faint companions using adaptive optics. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3353 1998. pp. 189-200
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