LINC-NIRVANA: MCAO toward Extremely Large Telescopes

Gäessler, Wolfgang; Arcidiacono, Carmelo; Egner, Sebastian; Herbst, Thomas; Andersen, David R.; Baumeister, Harald; Bizenberger, Peter; Boehnhardt, H.; Briegel, Florian; Kuerster, M.; Laun, W.; Mohr, Lars; Grimm, Bernhard; Rix, Hans─Walter; Rohloff, Ralf-Rainer; Soci, Roberto; Storz, Clemens; Xu, Wei; Ragazzoni, Roberto; Salinari, Piero; Diolaiti, Emiliano; Farinato, Jacopo; Carbillet, Marcel; Schreiber, Laura; Eckart, A.; Bertram, Thomas; Straubmeier, C.; Wang, Y.; Zealouk, Lahbib; Weigelt, G.; Beckmann, U.; Behrend, J.; Driebe, T.; Heininger, M.; Hofmann, K.-H.; Nußbaum, E.; Schertel, D.; Masciadri, E.

doi:10.1016/j.crhy.2005.11.005

Cited by 12 publications

(4 citation statements)

References 13 publications

(12 reference statements)

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“…With respect to night astronomy, typical test systems include the MCAO verification system MAD on the VLT of the southern European Observatory [103], the MCAO system GeMS [104][105][106] on the GEMINI South telescope, and the layered MCAO system LINC-NIRVANA [107,108] of the LBT. After a set of MCAO technology validation tests were completed, the MAD of VLT [109,110] was taken out of the telescope for GLAO.…”

Section: Wide Field Ao Technologymentioning

confidence: 99%

Astronomical adaptive optics: a review

Rao,

Zhong,

Guo

et al. 2024

PhotoniX

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Since the concept of adaptive optics(AO) was proposed in 1953, AO has become an indispensable technology for large aperture ground-based optical telescopes aimed at high resolution observations. This paper provides a comprehensive review of AO progress for large aperture astronomical optical telescopes including both night-time and day-time solar optical telescopes. The recent AO technological advances, such as Laser Guide Star, Deformable Secondary Mirror, Extreme AO, and Multi-Conjugate AO are focused.

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Section: Wide Field Ao Technologymentioning

confidence: 99%

Astronomical adaptive optics: a review

Rao,

Zhong,

Guo

et al. 2024

PhotoniX

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“…As the Deformable Mirror we use a continuous facesheet DM by Xinetics, which will later be used for LINC-NIRVANA, 19 with a diameter of 150mm and 349 piezo-stack actuators. The characteristics like linearity, hystere- sis, gain and influence functions of all the actuators have been measured extensively [20][21][22] to guarantee optimal control.…”

Section: Deformable Mirrormentioning

confidence: 99%

MANU-CHAO: a laboratory ground-layer adaptive optics experiment

Egner

Gäessler

Ragazzoni³

et al. 2006

SPIE Proceedings

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We present a laboratory setup of a Ground-Layer Adaptive Optics system. This system is a scaled-down version of the MCAO system of MAD (a MCAO system for the VLT) / LINC-NIRVANA (a Fizeau Imager for the LBT) and measures the wavefront aberrations with 4 pyramids in a layer-oriented fashion with optical co-addition. The laboratory setup contains besides the wavefront-sensing unit a telescope-simulator, a dynamic turbulence generator and a Deformable Mirror for the wavefront correction. We describe the overall system and its single components, open-and closed-loop measurements of the characteristics of a system working in GLAO mode and first results when using a Kalman filter for the control of the wavefront reconstruction process.

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“…The foreseen interferometric imaging focal plane of the Large Binocular Telescope 1 (LBT) will be realized by the LINC-NIRVANA instrument. LINC-NIRVANA (The LBT INterferometric Camera and Near IR/Visible Adaptive INterferometer for Astronomy) [2][3][4] is a near-infrared Fizeau interferometer for the LBT and will combine the light from the two 8.4 m primary mirrors into one single focus. The two primary mirrors are mounted on a common alt-azimuthal mount with a center-to-center separation of 14.4 m. In order to compensate for the atmospheric distortions of the incoming wavefront and to maintain a zero optical path difference (OPD) between its two arms, LINC-NIRVANA will use a Multi-Conjugate Adaptive Optics 5, 6 (MCAO) system 7,8 implementing the Multiple Field of View 9 version of the Layer Oriented 10,11 technique and a fringe-tracker.…”

Section: Introductionmentioning

confidence: 99%

Numerical control matrix rotation for the LINC-NIRVANA multiconjugate adaptive optics system

et al. 2010

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LINC-NIRVANA will realize the interferometric imaging focal station of the Large Binocular Telescope. A double Layer Oriented multi-conjugate adaptive optics system assists the two arms of the interferometer, supplying high order wave-front correction. In order to counterbalance the field rotation, mechanical derotation for the two ground wave-front sensors, and optical derotators for the mid-high layers sensors fix the positions of the focal planes with respect to the pyramids aboard the wave-front sensors. The derotation introduces pupil images rotation on the wavefront sensors: the projection of the deformable mirrors on the sensor consequently change. The proper adjustment of the control matrix will be applied in real-time through numerical computation of the new matrix. In this paper we investigate the temporal and computational aspects related to the pupils rotation, explicitly computing the wave-front errors that may be generated.

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LINC-NIRVANA: MCAO toward Extremely Large Telescopes

Cited by 12 publications

References 13 publications

Astronomical adaptive optics: a review

Astronomical adaptive optics: a review

MANU-CHAO: a laboratory ground-layer adaptive optics experiment

Numerical control matrix rotation for the LINC-NIRVANA multiconjugate adaptive optics system

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