title: Maximizing The Science Returns Of The LINC-NIRVANA Multi-Conjugated Adaptive Optics System
creator: Radhakrishnan Santhakumari, Kalyan Kumar
subject: 520
subject: 520 Astronomy and allied sciences
subject: 530
subject: 530 Physics
description: Earth's fully turbulent atmosphere prevents ground-based optical and near-infrared telescopes (larger than 30 cm) to reach their full potential, i.e. their diffraction-limited capabilities. In order to overcome this limitation, real-time correction of the aberrations caused by the atmosphere is essential. This is done using a technique called Adaptive Optics (AO). Achieving wide-field correction requires an extension to this technique known as Multi-Conjugated Adaptive Optics (MCAO). My PhD concentrated on max- imising the scientific return of one such MCAO system, the LINC-NIRVANA (LN) instrument currently undergoing commissioning at the Large Binocular Telescope. Starting from alignment and calibration in the lab to the on-going commissioning, I have contributed to the optical assembly, integration, verifica- tion, and software development of the LN MCAO system. I also solved a particular challenge faced by the MCAO systems, namely the "partial illumination issue". In addition, I also developed a concept that can improve the AO performance, which we call as the "wind predictive control". Finally, to understand the astrophysical capabilities of an AO system, I studied a pre-main sequence star system, the T Tauri, using observations from two instruments with advanced AO systems capable of providing high-contrast high-resolution near-infrared imagery.
date: 2017
type: Dissertation
type: info:eu-repo/semantics/doctoralThesis
type: NonPeerReviewed
format: application/pdf
identifier: https://archiv.ub.uni-heidelberg.de/volltextserverhttps://archiv.ub.uni-heidelberg.de/volltextserver/23759/1/KalyanKumarRadhakrishnanSanthakumari_PhDThesis_09Oct2017.pdf
identifier: DOI:10.11588/heidok.00023759
identifier: urn:nbn:de:bsz:16-heidok-237590
identifier:   Radhakrishnan Santhakumari, Kalyan Kumar  (2017) Maximizing The Science Returns Of The LINC-NIRVANA Multi-Conjugated Adaptive Optics System.  [Dissertation]     
relation: https://archiv.ub.uni-heidelberg.de/volltextserver/23759/
rights: info:eu-repo/semantics/openAccess
rights: http://archiv.ub.uni-heidelberg.de/volltextserver/help/license_urhg.html
language: eng