Initial test results from the Palomar 200-in. adaptive optics system

Dekany, Richard; Wallace, J. Kent; Brack, Gary L.; Oppenheimer, Ben R.; Palmer, Dean L.

doi:10.1117/12.290153

Cited by 20 publications

(7 citation statements)

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“…The instrument is fully detailed in Hinkley et al (2011). Between 2008 March and 2010 July, we carried out the Phase I survey, coupling the Project 1640 instrument with the 241-element PALAO adaptive optics (AO) system (Dekany et al 1997;Troy et al 2000) on the 5.1 m Hale Telescope at Palomar Observatory. For the Phase II survey, the instrument is mated with the high-order AO system PALM-3000 (Bouchez et al 2010) on the same telescope; the Phase II survey started in 2011 October.…”

Section: Introductionmentioning

confidence: 99%

Spectral Typing of Late-Type Stellar Companions to Young Stars From Low-Dispersion Near-Infrared Integral Field Unit Data

Roberts

Rice

Beichman

et al. 2012

The Astronomical Journal

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We used the Project 1640 near-infrared coronagraph and integral field spectrograph to observe 19 young solartype stars. Five of these stars are known binary stars and we detected the late-type secondaries and were able to measure their JH spectra with a resolution of R ∼ 30. The reduced, extracted, and calibrated spectra were compared to template spectra from the IRTF spectral library. With this comparison, we test the accuracy and consistency of spectral-type determination with the low-resolution near-infrared spectra from P1640. Additionally, we determine effective temperature and surface gravity of the companions by fitting synthetic spectra calculated with the PHOENIX model atmosphere code. We also present several new epochs of astrometry of each of the systems. Together, these data increase our knowledge and understanding of the stellar make up of these systems. In addition to the astronomical results, the analysis presented helps validate the Project 1640 data reduction and spectral extraction processes and the utility of low-resolution, near-infrared spectra for characterizing late-type companions in multiple systems.

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Section: Introductionmentioning

confidence: 99%

Spectral Typing of Late-Type Stellar Companions to Young Stars From Low-Dispersion Near-Infrared Integral Field Unit Data

Roberts

Rice

Beichman

et al. 2012

The Astronomical Journal

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“…The Palomar Adaptive-Optics system 21,22 ͑PALAO͒ is a facility-class AO system, developed jointly by the Jet Propulsion Laboratory and Caltech, and has been in use at the f͞15.7 Cassegrain focus of the 5-m telescope since March of 1999. At the time of these experiments, the PALAO routinely achieved 50% K-band Strehl ratios on natural guide stars brighter than 10th magnitude in the presence of 1-arc sec seeing ͑500-nm wavelength͒ and wind velocities of 5-10 m͞s.…”

Section: B Palomar Adaptive-optics Systemmentioning

confidence: 99%

Comparison of measurements of the outer scale of turbulence by three different techniques

Ziad

Schöck²,

Chanan³

et al. 2004

Appl. Opt.

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We have made simultaneous and nearly simultaneous measurements of ᏸ 0 , the outer scale of turbulence, at the Palomar Observatory by using three techniques: angle-of-arrival covariance measurements with the Generalized Seeing Monitor ͑GSM͒, differential-image-motion measurements with the adaptiveoptics system on the Hale 5-m telescope, and fringe speed measurements with the Palomar Testbed Interferometer ͑PTI͒. The three techniques give consistent results, an outer scale of approximately 10 -20 m, despite the fact that the spatial scales of the three instruments vary from 1 m for the GSM to 100 m for the PTI.

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“…Hubble Space Telescope PALM-3000+TMAS PALM-3000 uses two Xinetics, Inc. deformable mirrors in series as a woofer-tweeter pair to correct for measured atmospheric conditions at Palomar Mountain. The low-spatial frequency, large stroke mirror is the original PALM-241 39 , which has been in use since 1999. The high-spatial frequency, small stroke mirror is a new 3388 actuator device, the largest format astronomical deformable mirror used on the sky to date 40 .…”

Section: Palm-3000: Exoplanet Adaptive Optics Systemmentioning

confidence: 99%

PULSE: The Palomar Ultraviolet Laser for the Study of Exoplanets

Baranec

Dekany²,

Burruss

et al. 2014

SPIE Proceedings

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The Palomar Ultraviolet Laser for the Study of Exoplanets (PULSE) will dramatically expand the science reach of PALM-3000, the facility high-contrast extreme adaptive optics system on the 5-meter Hale Telescope. By using an ultraviolet laser to measure the dominant high spatial and temporal order turbulence near the telescope aperture, one can increase the limiting natural guide star magnitude for exquisite correction from m V < 10 to m V < 16. Providing the highest near-infrared Strehl ratios from any large telescope laser adaptive optics system, PULSE uniquely enables spectroscopy of low-mass and more distant young exoplanet systems, essential to formulating a complete picture of exoplanet populations.

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Initial test results from the Palomar 200-in. adaptive optics system

Cited by 20 publications

References 0 publications

Spectral Typing of Late-Type Stellar Companions to Young Stars From Low-Dispersion Near-Infrared Integral Field Unit Data

Spectral Typing of Late-Type Stellar Companions to Young Stars From Low-Dispersion Near-Infrared Integral Field Unit Data

Comparison of measurements of the outer scale of turbulence by three different techniques

PULSE: The Palomar Ultraviolet Laser for the Study of Exoplanets

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