Chromaticity in solar adaptive optics: a case study for the European Solar Telescope

Femenía-Castella, Bruno; Devaney, Nicholas; Cagigal, Miguel A. Núñez; Bonaque-González, Sergio

doi:10.1117/12.2629529

Cited by 1 publication

(1 citation statement)

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“…Also, experiments with MCAO are performed at the 1 m New Vacuum Solar telescope (NVST), with five selected guiding regions within 60″ × 52″ field to reach an FOV of 60″ (Rao et al 2018). Theoretical simulation of the future EST MCAO system using five DMs and 19 guide stars (GS) in 70″ shows a corrected FOV of 60″ at the 550 nm visible wavelength (Femenía-Castella et al 2022). DKIST MCAO is expected to provide the highest spatial resolution in a FOV as large as 60″ (Schmidt et al 2022).…”

Section: Introductionmentioning

confidence: 99%

Ground-layer Adaptive Optics for the 2.5 m Wide-field and High-resolution Solar Telescope

Yang,

Zhang,

Yan

et al. 2024

Res. Astron. Astrophys.

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The 2.5-m wide-field and high-resolution solar telescope (WeHoST) is currently under developing for solar observations. WeHoST aims to achieve high-resolution observations over a super-wide field of view (FOV) of 5 ′ × 5 ′ , and a desired resolution of 0.3 arcsec. To meet the scientific requirements of WeHoST, ground-layer adaptive optics (GLAO) with a specially designed wavefront sensing system is as the primary consideration. We introduce the GLAO configuration, particularly the wavefront sensing scheme. Utilizing analytic method, we simulate the performance of both classical AO and GLAO systems, optimize the wavefront sensing system, and evaluate GLAO performance in terms of PSF uniformity and correction improvement across whole FOV. The results indicate that, the classical AO will achieve diffraction-limited resolution; the suggested GLAO configuration will uniformly improve the seeing across the full 5 ′ × 5 ′ FOV, reducing the FWHM across the axis FOV to less than 0.3 ′′ (λ ≥ 705 nm, r 0 ≥ 11 cm), which is more than two times improvement. The specially designed wavefront sensor schedule offers new potential for WeHoST’s GLAO, particularly the multi-FOV GLAO and the flexibility to select the detected area. These capabilities will significantly enhance the scientific output of the telescope.

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Section: Introductionmentioning

confidence: 99%