Abstract

We present a detailed investigation of different methods of the characterization of atmospheric turbulence with the adaptive optics systems of the W. M. Keck Observatory. The main problems of such a characterization are the separation of instrumental and atmospheric effects and the accurate calibration of the devices involved. Therefore we mostly describe the practical issues of the analysis. We show that two methods, the analysis of differential image motion structure functions and the Zernike decomposition of the wave-front phase, produce values of the atmospheric coherence length r 0 that are in excellent agreement with results from long-exposure images. The main error source is the calibration of the wave-front sensor. Values determined for the outer scale ℒ0 are consistent between the methods and with typical ℒ0 values found at other sites, that is, of the order of tens of meters.

© 2003 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Performance of the Keck Observatory adaptive-optics system

Marcos A. van Dam, David Le Mignant, and Bruce A. Macintosh
Appl. Opt. 43(29) 5458-5467 (2004)

Determination of the optical turbulence parameters from the adaptive optics telemetry: critical analysis and on-sky validation

Laurent Jolissaint, Sam Ragland, Julian Christou, and Peter Wizinowich
Appl. Opt. 57(27) 7837-7856 (2018)

Performance of the Gemini Planet Imager’s adaptive optics system

Lisa A. Poyneer, David W. Palmer, Bruce Macintosh, Dmitry Savransky, Naru Sadakuni, Sandrine Thomas, Jean-Pierre Véran, Katherine B. Follette, Alexandra Z. Greenbaum, S. Mark Ammons, Vanessa P. Bailey, Brian Bauman, Andrew Cardwell, Daren Dillon, Donald Gavel, Markus Hartung, Pascale Hibon, Marshall D. Perrin, Fredrik T. Rantakyrö, Anand Sivaramakrishnan, and Jason J. Wang
Appl. Opt. 55(2) 323-340 (2016)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (14)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (28)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription