Dietrich Pescoller

On-sky capabilities and performance of the Keck All Sky Precision Adaptive optics system

Avinash Surendran, Maxwell Service, Jacques R. Delorme, Carlos M. Correia et autres

The Keck All Sky Precision Adaptive optics (KAPA) project upgrades the Keck I adaptive optics system to enable laser tomography using a four-laser guide star (LGS) asterism. KAPA is now in operation in both narrow field and wide field modes to optimize …

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Developing and operating AO RTC software for LGS R&D

David R. Jenkins, Daniel Jodlbauer, Pierre Haguenauer, Dietrich Pescoller et autres

MORFEO post-focal deformable mirrors: manufacturing and assembly phase following FDR success

Marco Xompero, Nicolò Azzaroli, paolo ciliegi, Lorenzo Busoni et autres

Enabling the next generation of Keck AO with the real time controller upgrade

Eduardo Marín, Jason Chin, Sylvain Cetre, Peter Wizinowich et autres

The Real Time Controllers (RTCs) for the W. M. Keck Observatory Adaptive Optics (AO) systems have been upgraded from a Field Programmable Gate Array (FPGA) to a Graphics Processing Unit (GPU) based solution. The previous RTCs, operating since 2007, had reached their …

ALASCA: the ESA Laser Guide Star Adaptive Optics Optical Feeder Link demonstrator facility

Roberto Biasi, Domenico Bonaccini Calia, Mauro Centrone, Martin Enderlein et autres

We report on the novel ALASCA (Advanced LGS AO for Satellite Communication Assessment) facility being built for ESA by a consortium of industry and national research institutes under the ScyLight program. The aim of ALASCA is to create a facility for Optical …

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Keck adaptive optics facility: real time controller upgrade

Jason Chin, Sylvain Cetre, Peter Wizinowich, Sam Ragland et autres

The W. M. Keck Observatory Adaptive Optics (AO) facilities have been operating with a Field Programmable Gate Array (FPGA) based real time controller (RTC) since 2007. The RTC inputs data from various AO wavefront and tip/tilt sensors; and corrects image blurring from …

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ESO's ELT M4 dynamic control and computational performance

Mario Andrighettoni, Mauro Manetti, Dietrich Pescoller, Gerald Angerer et autres

The ESO’s ELT M4 adaptive mirror is based on the large, contactless voice-coil adaptive mirror technology, with 5352 actuators controlling the shape of the six mirror segments [1]. The control concept is still based on a closed loop control with co-located capacitive …

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Direct expansion gas cooling system for the ESO's ELT M4 adaptive mirror

Roberto Biasi, Maurizio Groppi, Dietrich Pescoller, Gerald Angerer et autres

The ESO’s ELT M4 adaptive mirror is based on the large, contactless voice-coil adaptive mirror technology, with 5352 actuators controlling the shape of the six mirror segments. The system will dissipate up to 8 kW, which are removed by a direct gas …

it (code pays fourni par la source)

Implementation and initial test results of the new Keck real time controller

Roberto Biasi, Christian Patauner, Dietrich Pescoller, Chris Mair et autres

W. M. Keck Observatory (WMKO) has granted in 2018 to Microgate, supported by Swinburne University and Australian National University, the contract for the design, implementation and test of the new Adaptive Optics Real Time Controller. The new system is going to replace …

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Prototyping AO RTC using emerging high performance computing technologies with the Green Flash project

‪Damien Gratadour‬, James Osborn, Hugues Deneux, Roberto Biasi et autres

The Green Flash initiative responds to a critical challenge in the astronomical community. Scaling up the real-time control solutions of AO instruments in operation to the specifications of the AO modules at the core of the next generation of extremely large telescopes …

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FPGA based microserver for high performance real-time computing in Adaptive Optics

Christian Patauner, Roberto Biasi, Mario Andrighettoni, Gerald Angerer et autres

The real-time data pipeline of ELT-oriented adaptive optics control systems requires very large communication bandwidth, flexible interfacing, high computational power and memory bandwidth, low latency and low jitter.A potential solution to all these challenging requirements has been developed by Microgate in the …

it, fr (code pays fourni par la source)

Direct expansion gas cooling technology applied to the E-ELT M4 adaptive mirror

Dietrich Pescoller, Roberto Biasi, Matteo Tintori, Mauro Manetti et autres

The E-ELT M4 adaptive mirror is based on the voice-coil contactless adaptive mirror technology, with more than 5000 actuators controlling the mirror shape.Its driving electronics is expected to dissipate about 7-8kW, with consequent heat generation.Considering the M4 mirror location inside the telescope …