Laboratory demonstration of real time frame selection with Magellan AO

Jared R. Males, Laird M Close, Derek Kopon, Fernando Quiros-Pacheco, Armando Riccardi, Marco Xompero, Alfio Puglisi, Victor Gasho, Katie M. Morzinski, Katherine B. Follete

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

8 Citations (Scopus)

Abstract

The Magellan AO system combines a pyramid wavefront sensor and high-order adaptive secondary mirror, and will see first light on the Magellan Clay telescope in November 2012. With a 24 cm projected actuator pitch, this powerful system will enable good correction in the optical (0.5 to 1 μm). Realistic laboratory testing has produced Strehl ratios greater than 40% in i' (0.765 μm) on bright simulated stars. On fainter stars our visible AO camera, VisAO, will work in the partially corrected regime with only short moments of good correction. We have developed a form of lucky imaging, called real time frame selection, which uses a fast shutter to block moments of bad correction, and quickly opens the shutter when the correction is good, enabling long integrations on a conventional CCD while maximizing Strehl ratio and resolution. The decision to open or shut is currently based on reconstructed WFS telemetry. Here we report on our implementation and testing of this technique in the Arcetri test tower in Florence, Italy, where we showed that long exposure i' Strehl could be improved from 16% to 26% when the selection threshold was set to the best 10% of instantaneous Strehl.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume8447
DOIs
StatePublished - 2012
EventAdaptive Optics Systems III - Amsterdam, Netherlands
Duration: Jul 1 2012Jul 6 2012

Other

OtherAdaptive Optics Systems III
CountryNetherlands
CityAmsterdam
Period7/1/127/6/12

Fingerprint

Stars
Star
Demonstrations
Real-time Imaging
Moment
Telemetry
Testing
Wavefront Sensor
shutters
Pyramid
Telemetering
Wavefronts
Charge coupled devices
Telescopes
Towers
Instantaneous
Telescope
Actuator
Mirror
Clay

Keywords

  • Adaptive optics
  • Frame selection
  • Lucky imaging
  • Magellan
  • Visible adaptive optics

ASJC Scopus subject areas

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

Cite this

Males, J. R., Close, L. M., Kopon, D., Quiros-Pacheco, F., Riccardi, A., Xompero, M., ... Follete, K. B. (2012). Laboratory demonstration of real time frame selection with Magellan AO. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 8447). [844742] https://doi.org/10.1117/12.926698

Laboratory demonstration of real time frame selection with Magellan AO. / Males, Jared R.; Close, Laird M; Kopon, Derek; Quiros-Pacheco, Fernando; Riccardi, Armando; Xompero, Marco; Puglisi, Alfio; Gasho, Victor; Morzinski, Katie M.; Follete, Katherine B.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8447 2012. 844742.

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

Males, JR, Close, LM, Kopon, D, Quiros-Pacheco, F, Riccardi, A, Xompero, M, Puglisi, A, Gasho, V, Morzinski, KM & Follete, KB 2012, Laboratory demonstration of real time frame selection with Magellan AO. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 8447, 844742, Adaptive Optics Systems III, Amsterdam, Netherlands, 7/1/12. https://doi.org/10.1117/12.926698
Males JR, Close LM, Kopon D, Quiros-Pacheco F, Riccardi A, Xompero M et al. Laboratory demonstration of real time frame selection with Magellan AO. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8447. 2012. 844742 https://doi.org/10.1117/12.926698
Males, Jared R. ; Close, Laird M ; Kopon, Derek ; Quiros-Pacheco, Fernando ; Riccardi, Armando ; Xompero, Marco ; Puglisi, Alfio ; Gasho, Victor ; Morzinski, Katie M. ; Follete, Katherine B. / Laboratory demonstration of real time frame selection with Magellan AO. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8447 2012.
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