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SPHERE is the high-contrast exoplanet imager and spectrograph installed at the Unit Telescope 3 of the Very Large Telescope. After more than two years of regular operations, we analyse statistically the performance of the adaptive optics…

Instrumentation and Methods for Astrophysics · Physics 2018-07-03 J. Milli , D. Mouillet , T. Fusco , J. H. Girard , E. Masciadri , E. Pena , J. -F. Sauvage , C. Reyes , K. Dohlen , J. -L. Beuzit , M. Kasper , M. Sarazin , F. Cantalloube

In recent years, a large number of geosynchronous satellites are being planned to provide augmentation services for enhancing the precision to global positioning systems, e.g., GPS, in applications such as aircraft landing. In this paper,…

Space Physics · Physics 2011-09-23 C. R. Subrahmanya , Peeyush Prasad , R. Somashekar

A novel human-machine interactive training method for dynamic load change operation in air separation processes (ASPs) is proposed. A shadow operator (SO) is developed in this method to train ASP operators through industrial model…

Systems and Control · Electrical Eng. & Systems 2023-07-07 Guanghui Yang , Zhijiang Shao , Rui Wang , Zuhua Xu , Lidan Cui

Vision-language-action (VLA) models achieve strong generalization through large-scale pre-training, but real-world deployment requires expert-level task proficiency in addition to broad generality. Existing post-training approaches for VLA…

The Durham Adaptive Optics Simulation Platform (DASP) is a Monte-Carlo modelling tool used for the simulation of astronomical and solar adaptive optics systems. In recent years, this tool has been used to predict the expected performance of…

Instrumentation and Methods for Astrophysics · Physics 2018-02-26 Alastair Basden , Nazim Bharmal , David Jenkins , Timothy Morris , James Osborn , Peng Jia , Lazar Staykov

Public observatory project is playing more and more important role in science popularization education and scientific research, and many amateur astronomers also have began to build their own observatories in remote areas. As a result of…

Instrumentation and Methods for Astrophysics · Physics 2018-01-19 Jun Han , Dongwei Fan , Chenzhou Cui , Chuanzhong Wang , Shanshan Li , Linying Mi , Zheng Li , Yunfei Xu , Boliang He , Changhua Li , Yihan Tao , Sisi Yang

The point spread function (PSF) reflects states of a telescope and plays an important role in development of data processing methods, such as PSF based astrometry, photometry and image restoration. However, for wide field small aperture…

Instrumentation and Methods for Astrophysics · Physics 2021-07-07 Peng Jia , Xuebo Wu , Zhengyang Li , Bo Li , Weihua Wang , Qiang Liu , Adam Popowicz

The Transient Optical Sky Survey (TOSS) is an automated, ground-based telescope system dedicated to searching for optical transient events. Small telescope tubes are mounted on a tracking, semi-equatorial frame with a single polar axis.…

Instrumentation and Methods for Astrophysics · Physics 2012-10-05 E. Hadjiyska , G. Hughes , P. Lubin , S. Taylor , R. Hartong-Redden , J. Zierten

We propose a new method for solving an important problem of astronomy that arises in observations with ultrahigh-angular-resolution interferometers. This method is based on the application of the theory of artificial neural networks. We…

Instrumentation and Methods for Astrophysics · Physics 2019-06-26 Alexander Shatskiy , Ivan Evgeniev

Forecasting optical turbulence in the Earth's atmosphere has been an ambitious challenge for the astronomical scientific community for several decades. While earlier research primarily focused on whether it was possible to predict optical…

Instrumentation and Methods for Astrophysics · Physics 2025-10-27 Elena Masciadri , Alessio Turchi , Camilo Weinberger , Marlene De Sepibus , Luca Fini

Self-supervised pre-training bears potential to generate expressive representations without human annotation. Most pre-training in Earth observation (EO) are based on ImageNet or medium-size, labeled remote sensing (RS) datasets. We share…

Computer Vision and Pattern Recognition · Computer Science 2023-05-30 Yi Wang , Nassim Ait Ali Braham , Zhitong Xiong , Chenying Liu , Conrad M Albrecht , Xiao Xiang Zhu

The Simons Observatory (SO) is a group of modern telescopes dedicated to observing the polarized cosmic microwave background (CMB), transients, and more. The Observatory consists of four telescopes and instruments, with over 60,000…

Instrumentation and Methods for Astrophysics · Physics 2025-10-07 David V. Nguyen , Sanah Bhimani , Nicholas Galitzki , Brian J. Koopman , Jack Lashner , Laura Newburgh , Max Silva-Feaver , Kyohei Yamada

Modern Giant Segmented Mirror Telescopes (GSMTs) like the Extremely Large Telescope, which is currently under construction, depend heavily on Adaptive Optics (AO) systems to correct for atmospheric distortions. However, a residual blur…

Instrumentation and Methods for Astrophysics · Physics 2023-07-05 Roland Wagner , Jenny Niebsch , Ronny Ramlau

Instruments for radio astronomical observations have come a long way. While the first telescopes were based on very large dishes and 2-antenna interferometers, current instruments consist of dozens of steerable dishes, whereas future…

Instrumentation and Methods for Astrophysics · Physics 2015-03-13 Stefan J. Wijnholds , Sebastiaan van der Tol , Ronald Nijboer , Alle-Jan van der Veen

The present situation of the teaching-learning relationship in astronomy is rarely investigated in our country. This is so, even when it is widely recognized that astronomy is an integral discipline, at the crossroads of advances in…

Physics Education · Physics 2008-09-17 Alejandro Gangui , Maria Iglesias , Cynthia Quinteros

The development of the works of the author about adaptive algorithms of teaching the robotic systems with the help of operator is described here. An operator is assumed to be an experience decision-maker and sane carrier of a target which…

Robotics · Computer Science 2015-09-08 Valery Vilisov

Both the basic educational contents for students and study programs for science teachers include several topics in physics and astronomy, from the simplest ones to others as advanced as nuclear fusion to explain stellar evolution and…

Physics Education · Physics 2008-07-03 Maria Iglesias , Cynthia Quinteros , Alejandro Gangui

Over the last few years, several interesting observations were obtained with the help of solar Adaptive Optics (AO). In this paper, few observations made using the solar AO are enlightened and briefly discussed. A list of disadvantages with…

Astrophysics · Physics 2009-11-13 K. Sankarasubramanian , T. Rimmele