Site-seeing measurements for the European Solar Telescope

Berkefeld, T.; Bettonvil, Felix; Collados, M.; López, Roberto López; Martín, Y.; Peñate, José; Perez, A.; Scharmer, G.; Sliepen, Guus; Soltau, D.; Waldmann, T.; Werkhoven, Tim van

doi:10.1117/12.857025

Cited by 10 publications

(3 citation statements)

References 15 publications

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“…Rimmele et al (2010)). Much effort is thus currently being devoted to characterize the contributions to seeing from atmospheric layers up to 10-12 km , Berkefeld et al (2010), Kellerer et al (2012)) in order to develop and optimize the so-called Multi-Conjugate Adaptive Optics systems, which couple (multiple) deformable mirrors to a number of relevant layers in the atmosphere and allows correction on larger fields of view. These systems are currently being tested at the DST ), the GREGOR telescope ), the NST ), with the obvious scope to install them at the largest telescopes of the future (e.g.…”

Section: Ground-based Optical Telescopesmentioning

confidence: 99%

Science with Large Solar Telescopes: Overview of SpS 6

Cauzzi¹,

Tritschler²,

Deng³

2012

Proc. IAU

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Abstract.With several large aperture optical and IR telescopes just coming on-line, or scheduled for the near future, solar physics is on the verge of a quantum leap in observational capabilities. An efficient use of such facilities will require new and innovative approaches to both observatory operations and data handling.This two-days long Special Session discussed the science expected with large solar telescopes, and started addressing the strategies necessary to optimize their scientific return. Cutting edge solar science as derived from state-of-the-art observations and numerical simulations and modeling was presented, and discussions were held on the role of large facilities in satisfying the demanding requirements of spatial and temporal resolution, stray-light correction, and spectropolarimetric accuracy. Building on the experience of recently commissioned telescopes, critical issues for the development of future facilities were discussed. These included operational issues peculiar to large telecopes as well as strategies for their best use.

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Section: Ground-based Optical Telescopesmentioning

confidence: 99%

Science with Large Solar Telescopes: Overview of SpS 6

Cauzzi¹,

Tritschler²,

Deng³

2012

Proc. IAU

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“…It makes stronger turbulences with greater capacity of change. This is supported along with the necessity of the development of solar telescopes, as the Swedish Solar Telescope (SST), a 1 m diameter telescope located in La Palma [12,13] for solar observation that has an integrated AO system characterized by having two bimorphic deformable mirror (DM) [14], which produce fewer aberrations than those formed by discrete actuators but the capacity they have to adapt to different forms is inferior, or the EST [15], a 4 m telescope designed to be located in the Canary Islands, capable to be adapted to a wide range of AO configurations [16].…”

Section: Introductionmentioning

confidence: 99%

Convolutional Neural Networks Approach for Solar Reconstruction in SCAO Configurations

Gómez

González-Gutiérrez

Riesgo

et al. 2019

Sensors

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Correcting atmospheric turbulence effects in light with Adaptive Optics is necessary, since it produces aberrations in the wavefront of astronomical objects observed with telescopes from Earth. These corrections are performed classically with reconstruction algorithms; between them, neural networks showed good results. In the context of solar observation, the usage of Adaptive Optics on solar differs from nocturnal operations, bringing up a challenge to correct the image aberrations. In this work, a convolutional approach is given to address this issue, considering SCAO configurations. A reconstruction algorithm is presented, “Shack-Hartmann reconstruction with deep learning on solar–prototype” (proto-HELIOS), to correct on fixed solar images, achieving an average 85.39% of precision in the reconstruction. Additionally, results encourage to continue working with these techniques to achieve a reconstruction technique for all the regions of the sun.

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“…The data was then reduced using a SLODAR style analysis to calculate full atmospheric profiles for the site. This is especially important as the European Solar Telescope (EST) is to be situated in the Canary Islands, possibly La Palma, 8 and is due to have an MCAO system in order to achieve high resolution across the whole field of view (2 × 2arcmin 2 ). Figure 1.…”

Section: Introductionmentioning

confidence: 99%

Daytime site characterisation of La Palma, and its relation to night-time conditions

et al. 2014

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This paper presents preliminary daytime profiles taken using a Wide-Field Shack-Hartmann Sensor at the Swedish Solar Telescope (SST), La Palma. These are contrasted against Stereo-SCIDAR data from corresponding nights to assess the validity of the assumptions currently used for simulating the performances of possible Multi-Conjugate Adaptive Optics (MCAO) systems for future solar telescopes, especially the assumption that the structure of the high altitude turbulence is mostly similar between the day and the night. We find that for our data both the altitude and the strength of the turbulence differ between the day and the night, although more data is required to draw any conclusions about typical behaviour and conditions.

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Site-seeing measurements for the European Solar Telescope

Cited by 10 publications

References 15 publications

Science with Large Solar Telescopes: Overview of SpS 6

Science with Large Solar Telescopes: Overview of SpS 6

Convolutional Neural Networks Approach for Solar Reconstruction in SCAO Configurations

Daytime site characterisation of La Palma, and its relation to night-time conditions

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