ShaneAO: an enhanced adaptive optics and IR imaging system for the Lick Observatory 3-meter telescope

Kupke, Renate; Gavel, Donald T.; Roskosi, Constance; Cabak, Gerald; Cowley, David J.; Dillon, Daren; Gates, E. L.; McGurk, Rosalie; Norton, Andrew; Peck, M. C.; Ratliff, Christopher; Reinig, Marc

doi:10.1117/12.926470

Cited by 27 publications

(16 citation statements)

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“…For example, work is underway on: a second generation LGS AO system for the Lick Shane telescope which will include a MEMS DM and a fiber laser [26], replacement of the current VLT laser with a fiber laser [27], replacement of the Keck II side launch of the laser with a center launch telescope, fabrication of a near-infrared tip-tilt sensor for the Keck I LGS AO system, integrating a peripheral wavefront sensor for increased sky coverage on Gemini-North [28], and improving the sodium-wavelength throughput of the Subaru laser transport fiber [29].…”

Section: In Fabricationmentioning

confidence: 99%

Progress in laser guide star adaptive optics and lessons learned

Wizinowich

2012

SPIE Proceedings

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Laser Guide Star (LGS) Adaptive Optics (AO) on large telescopes has recently become a very productive science tool for the astronomical community. Astronomical objects can now be observed at an unprecedented resolution over much of the sky. The science enabled by LGS AO and the capabilities and limitations of these systems will be discussed, along with the lessons learned that can be applied to LGS AO systems on existing and planned telescopes.

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Section: In Fabricationmentioning

confidence: 99%

Progress in laser guide star adaptive optics and lessons learned

Wizinowich

2012

SPIE Proceedings

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“…We also observed EPIC 211923431, EPIC 211997641, EPIC 212040382, and EPIC 212081533 on UT 2019 January 24 using the ShARCS camera on the Shane 3-meter telescope at Lick Observatory (Kupke et al 2012;Gavel et al 2014;McGurk et al 2014). Observations were taken with the Shane adaptive optics system in natural guide star and laser guide star modes (See Savel et al (2020) for a detailed description of the observing strategy and reduction procedure).…”

Section: Speckle and Ao Imagingmentioning

confidence: 99%

37 new validated planets in overlapping K2 campaigns

Leon

Livingston

Endl

et al. 2021

Monthly Notices of the Royal Astronomical Society

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We analysed 68 candidate planetary systems first identified during Campaigns 5 and 6 (C5 and C6) of the NASA K2 mission. We set out to validate these systems by using a suite of follow-up observations, including adaptive optics, speckle imaging, and reconnaissance spectroscopy. The overlap between C5 with C16 and C18, and C6 with C17, yields lightcurves with long baselines that allow us to measure the transit ephemeris very precisely, revisit single transit candidates identified in earlier campaigns, and search for additional transiting planets with longer periods not detectable in previous works. Using vespa, we compute false positive probabilities of less than 1% for 37 candidates orbiting 29 unique host stars and hence statistically validate them as planets. These planets have a typical size of 2.2 R⊕ and orbital periods between 1.99 and 52.71 days. We highlight interesting systems including a sub-Neptune with the longest period detected by K2, sub-Saturns around F stars, several multi-planetary systems in a variety of architectures. These results show that a wealth of planetary systems still remains in the K2 data, some of which can be validated using minimal follow-up observations and taking advantage of analyses presented in previous catalogs.

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“…• A new infra-red camera (called ShARCS -Shane Ao infraRed Camera and Spectrograph) based on the Teledyne HAWAII-2RG detector that has higher resolution, higher quantum efficiency and lower noise than the PICNIC array used in IRCAL. 6 The change in detector alone enables longer exposure times before detector limits are reached (where night sky lines are not dominant).…”

Section: Introductionmentioning

confidence: 99%

Swimming with ShARCS: comparison of on-sky sensitivity with model predictions for ShaneAO on the Lick Observatory 3-meter telescope

et al. 2014

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The Lick Observatory's Shane 3-meter telescope has been upgraded with a new infrared instrument (ShARCS -Shane Adaptive optics infraRed Camera and Spectrograph) and dual-deformable mirror adaptive optics (AO) system (ShaneAO). We present first-light measurements of imaging sensitivity in the Ks band. We compare measured results to predicted signal-to-noise ratio and magnitude limits from modeling the emissivity and throughput of ShaneAO and ShARCS. The model was validated by comparing its results to the Keck telescope adaptive optics system model and then by estimating the sky background and limiting magnitudes for IRCAL, the previous infra-red detector on the Shane telescope, and comparing to measured, published results. We predict that the ShaneAO system will measure lower sky backgrounds and achieve 20% higher throughput across the JHK bands despite having more optical surfaces than the current system. It will enable imaging of fainter objects (by 1-2 magnitudes) and will be faster to reach a fiducial signal-to-noise ratio by a factor of 10-13. We highlight the improvements in performance over the previous AO system and its camera, IRCAL.

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ShaneAO: an enhanced adaptive optics and IR imaging system for the Lick Observatory 3-meter telescope

Cited by 27 publications

References 0 publications

Progress in laser guide star adaptive optics and lessons learned

Progress in laser guide star adaptive optics and lessons learned

37 new validated planets in overlapping K2 campaigns

Swimming with ShARCS: comparison of on-sky sensitivity with model predictions for ShaneAO on the Lick Observatory 3-meter telescope

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