Recent results and perspectives for precision astrometry and photometry with adaptive optics

Jessica R. Lu, Andrea M. Ghez, Sylvana Yelda, Tuan Do, Will Clarkson, Nate McCrady, Mark Morris

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

12 Scopus citations


Large ground-based telescopes equipped with adaptive optics (AO) systems have ushered, in a new era of highresolution infrared photometry and astrometry. Relative astrometric accuracies of <0.2 mas have already been demonstrated, from infrared images with spatial resolutions of 55-95 mas resolution over 10-20" fields of view. Relative photometric accuracies of 3% and absolute photometric accuracies of 5%-20% are also possible. I will review improvements and current limitations in astrometry and photometry with adaptive optics of crowded stellar fields. These capabilities enable experiments such as measuring orbits for brown dwarfs and exoplanets, studying our Galaxy's supermassive black hole and its environment, and identifying individual stars in young star clusters, which can be used test the universality of the initial mass function.

Original languageEnglish
Title of host publicationAdaptive Optics Systems II
EditionPART 1
StatePublished - 2010
EventAdaptive Optics Systems II - San Diego, CA, United States
Duration: Jun 27 2010Jul 2 2010

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
NumberPART 1
ISSN (Print)0277-786X


ConferenceAdaptive Optics Systems II
Country/TerritoryUnited States
CitySan Diego, CA


  • Adaptive optics
  • Astrometry


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