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We overview the current status of photometric analyses of images collected with Multi Conjugate Adaptive Optics (MCAO) at 8-10m class telescopes that operated, or are operating, on sky. Particular attention will be payed to resolved stellar…

(abridged) Extreme adaptive optics (XAO) encounters severe difficulties to cope with the high speed (>1kHz), high accuracy and high order requirements for future extremely large telescopes. An innovative high order adaptive optics system…

Instrumentation and Methods for Astrophysics · Physics 2015-09-29 Christian Delacroix , Maud Langlois , Magali Loupias , Eric Thiébaut , Louisa Adjali , Jonathan Leger , Michel Tallon

The Adaptive Optics Facility (AOF) project envisages transforming one of the VLT units into an adaptive telescope and providing its ESO (European Southern Observatory) second generation instruments with turbulence corrected wavefronts. For…

Instrumentation and Methods for Astrophysics · Physics 2015-06-23 A. Garcia-Rissmann , A. Guesalaga , J. Kolb , M. Le Louarn , P. -Y. Madec , B. Neichel

The new class of large telescopes, as the future ELT, are designed to work with Laser Guide Star (LGS) tuned to a resonance of atmosphere sodium atoms. This wavefront sensing technique presents complex issues for an application to big…

Instrumentation and Methods for Astrophysics · Physics 2018-04-20 M. Patti , M. Lombini , L. Schreiber , G. Bregoli , C. Arcidiacono , G. Cosentino , E. Diolaiti , I. Foppiani

Astrometry was not a science case of the Gemini Multiconjugate adaptive optics System (GeMS) at its design stage. However, since GeMS has been in regular science operation with the Gemini South Adaptive Optics Imager (GSAOI), their…

Instrumentation and Methods for Astrophysics · Physics 2019-03-22 Mauro Patti , Giuliana Fiorentino

Adaptive optics is a strategy to compensate for sample-induced aberrations in microscopy applications. Generally, it requires the presence of "guide stars" in the sample to serve as localized reference targets. We describe an implementation…

Traditional wavefront control in high-energy, high-intensity laser systems usually lacks real-time capability, failing to address dynamic aberrations. This limits experimental accuracy due to shot-to-shot fluctuations and necessitates long…

Multifocal plane microscopy (MUM) allows three dimensional objects to be imaged in a single camera frame. Our approach uses dual orthogonal diffraction phase gratings with a quadratic distortion of the lines to apply defocus to the first…

Optics · Physics 2020-03-13 Benjamin Gore , Noah Schwartz , Paul Dalgarno

The Subaru Coronagraphic Extreme Adaptive Optics (SCExAO) instrument is a multipurpose high-contrast imaging platform designed for the discovery and detailed characterization of exoplanetary systems and serves as a testbed for high-contrast…

We describe KAPAO, our project to develop and deploy a low-cost, remote-access, natural guide star adaptive optics (AO) system for the Pomona College Table Mountain Observatory (TMO) 1-meter telescope. We use a commercially available…

We present laboratory results of the closed-loop performance of the Magellan Adaptive Optics (AO) Adaptive Secondary Mirror (ASM), pyramid wavefront sensor (PWFS), and VisAO visible adaptive optics camera. The Magellan AO system is a…

Instrumentation and Methods for Astrophysics · Physics 2014-07-23 Derek Kopon , Laird M. Close , Jared Males , Victor Gasho , Katie Morzinski , Katherine Follette

The Multi Unit Spectroscopic Explorer (MUSE) is an integral field spectrograph on the Very Large Telescope Unit Telescope 4, capable of laser guide star assisted and tomographic adaptive optics using the GALACSI module. Its observing…

Instrumentation and Methods for Astrophysics · Physics 2022-09-19 T. Wevers , F. J. Selman , A. Reyes , M. Vega , J. Hartke , F. Bian , O. Beltramo-Martin , R. Fétick , S. Kamann , J. Kolb , T. Kravtsov , C. Moya , B. Neichel , S. Oberti , C. Reyes , E. Valenti

In robotic navigation, maintaining precise pose estimation and navigation in complex and dynamic environments is crucial. However, environmental challenges such as smoke, tunnels, and adverse weather can significantly degrade the…

Robotics · Computer Science 2025-07-25 Chenglong Qian , Yang Xu , Xiufang Shi , Jiming Chen , Liang Li

High-impact climate damages are often driven by compounding climate conditions. For example, elevated heat stress conditions can arise from a combination of high humidity and temperature. To explore future changes in compounding hazards…

Atmospheric and Oceanic Physics · Physics 2025-01-09 Shruti Nath , Julie Carreau , Kai Kornhuber , Peter Pfleiderer , Carl-Friedrich Schleussner , Philippe Naveau

In this paper we present the Adaptive Optics Lucky Imager (AOLI), a state-of-the-art instrument which makes use of two well proved techniques for extremely high spatial resolution with ground-based telescopes: Lucky Imaging (LI) and…

We design the imaging data calibration and reduction software for MICADO, the First Light near-IR instrument on the Extremely Large Telescope. In this process we have hit the limit of what can be achieved with a detailed software design…

Instrumentation and Methods for Astrophysics · Physics 2020-11-10 Hugo Buddelmeijer , Gijs A. Verdoes Kleijn , Kieran Leschinski

One of the key science goals for a diffraction limited imager on an Extremely Large Telescope (ELT) is the resolution of individual stars down to faint limits in distant galaxies. The aim of this study is to test the proposed capabilities…

Instrumentation and Methods for Astrophysics · Physics 2015-05-28 A. Deep , G. Fiorentino , E. Tolstoy , E. Diolaiti , M. Bellazzini , P. Ciliegi , R. I. Davies , J. -M. Conan

Integral field spectrographs are major instruments to study the mechanisms involved in the formation and the evolution of early galaxies. When combined with multi-object spectroscopy, those spectrographs can behave as machines used to…

Astrophysics · Physics 2008-11-26 Francois Assemat , Eric Gendron , Francois Hammer

Arrays of ultrasonic sensors are capable of 3D imaging in air and an affordable supplement to other sensing modalities, such as radar, lidar, and camera, i.e. in heterogeneous sensing systems. However, manufacturing tolerances of…

Signal Processing · Electrical Eng. & Systems 2024-12-19 Raphael Müller , Gianni Allevato , Matthias Rutsch , Christoph Haugwitz , Tianyi Liu , Mario Kupnik , Marius Pesavento

METIS is one of the three first-light instruments planned for the ELT, mainly dedicated to high contrast imaging in the mid-infrared. On the SPHERE high-contrast instrument currently installed at the VLT, we observe that one of the main…

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