Application of Hartmann linear calibrations to ViLLaGEs

Ammons, S. Mark; Gavel, Donald T.; Dillon, Daren; Reinig, Marc; Grigsby, Bryant; Morzinski, Katie M.

doi:10.1117/12.789816

Cited by 6 publications

(4 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This results in an open-loop wavefront sensing architecture, requiring high dynamic range, linear wavefront sensing of the full atmospheric wavefront error. Such openloop wavefront sensing has been successfully demonstrated 30 by the ViLLaGEs AO system at Lick Observatory to a wavefront accuracy of 40 nm RMS 31 , representing a small term in our overall error budget, as well as within the vision science community 32 .…”

Section: Wavefront Sensor Packaging and Wavefront Control Strategymentioning

confidence: 96%

PULSE: The Palomar Ultraviolet Laser for the Study of Exoplanets

Baranec

Dekany²,

Burruss

et al. 2014

SPIE Proceedings

View full text Add to dashboard Cite

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.

show abstract

Section: Wavefront Sensor Packaging and Wavefront Control Strategymentioning

confidence: 96%

PULSE: The Palomar Ultraviolet Laser for the Study of Exoplanets

Baranec

Dekany²,

Burruss

et al. 2014

SPIE Proceedings

View full text Add to dashboard Cite

show abstract

“…The first generation of MOAO demonstrators, with the Visible Light Laser Guidestar Experiments (ViLLaGEs, Ammons et al 2008;Gavel et al 2008) and the Victoria Open Loop Testbed (VOLT, Andersen et al 2008), were focused on open-loop control. Both ViLLaGes and VOLT performed below expectations at low temporal frequencies and highlighted calibration and alignment issues for open-loop control.…”

Section: Moao Demonstratorsmentioning

confidence: 99%

The Adaptive Optics System for the Gemini Infrared Multi-Object Spectrograph: Performance Modeling

Conod,

Jackson,

Turri

et al. 2023

PASP

View full text Add to dashboard Cite

The Gemini Infrared Multi-Object Spectrograph (GIRMOS) will be a near-infrared, multi-object, medium spectral resolution, integral field spectrograph (IFS) for Gemini North Telescope, designed to operate behind the future Gemini North Adaptive Optics system (GNAO). In addition to a first ground layer Adaptive Optics (AO) correction in closed loop carried out by GNAO, each of the four GIRMOS IFSs will independently perform additional multi-object AO correction in open loop, resulting in an improved image quality that is critical to achieve top level science requirements. We present the baseline parameters and simulated performance of GIRMOS obtained by modeling both the GNAO and GIRMOS AO systems. The image quality requirement for GIRMOS is that 57% of the energy of an unresolved point-spread function ensquared within a 0.1 × 0.1 arcsecond at 2.0 μ m. It was established that GIRMOS will be an order 16 × 16 adaptive optics (AO) system after examining the tradeoffs between performance, risks and costs. The ensquared energy requirement will be met in median atmospheric conditions at Maunakea at 30° from zenith.

show abstract

“…While the risks associated with MOAO IFSs have kept proposed VLT and ELT instruments on the drawing board, the scientific promise is so great that multiple on-sky demonstrators have been developed. The Visible Light Laser Guidestar Experiments (ViLLaGEs; Gavel et al 2008;Ammons et al 2008) The Victoria Open Loop Testbed (VOLT; Andersen et al 2009) was an experiment aimed at distilling the problems of open-loop control into a simple experiment. VOLT demonstrated open-loop control in the laboratory and on-sky at the Dominion Astrophysical Observatory 1.2 m telescope using a simple on-axis NGS system (Andersen et al 2008).…”

Section: Moao Demonstratorsmentioning

confidence: 99%

Performance Modeling for the RAVEN Multi-Object Adaptive Optics Demonstrator

Andersen¹,

Jackson²,

Blain³

et al. 2012

Publications of the Astronomical Society of the Pacific

View full text Add to dashboard Cite

RAVEN will be a Multi-Object Adaptive Optics (MOAO) technology and science demonstrator on the Subaru telescope. The baseline design calls for three natural guide star (NGS) wavefront sensors (WFS) and two science pickoff arms that will patrol a ∼2′ diameter field of regard (FOR). Sky coverage is an important consideration, because RAVEN is both a technical and science demonstrator. Early-stage simulation of RAVEN's performance is critical in establishing that the key science requirement can be met. That is, 30% of the energy of an unresolved pointspread function (PSF) be ensquared within a 140 mas slit using existing WFS camera and deformable mirror (DM) technology. The system was simulated with two independent modeling tools, MAOS and OOMAO, which were in excellent agreement. It was established that RAVEN will be an order 10 × 10 adaptive optics (AO) system by examining the tradeoffs between performance, sky coverage, and WFS field of view. The 30% ensquared-energy (EE) requirement will be met with three NGSs and will exceed 40% if the Subaru Laser Guide Star (LGS) is used onaxis (assuming median image quality). This is also true for NGSs as faint as m R ¼ 14:5.

show abstract

Application of Hartmann linear calibrations to ViLLaGEs

Cited by 6 publications

References 9 publications

PULSE: The Palomar Ultraviolet Laser for the Study of Exoplanets

PULSE: The Palomar Ultraviolet Laser for the Study of Exoplanets

The Adaptive Optics System for the Gemini Infrared Multi-Object Spectrograph: Performance Modeling

Performance Modeling for the RAVEN Multi-Object Adaptive Optics Demonstrator

Contact Info

Product

Resources

About