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The optimization and scheduling of scientific observations done with instrumentation supported by adaptive optics could greatly benefit from the forecast of PSF figures of merit (FWHM, Strehl Ratio, Encircle Energy and contrast), that…

Instrumentation and Methods for Astrophysics · Physics 2020-12-15 A. Turchi , G. Agapito , E. Masciadri , O. Beltramo-Martin , E. Pinna , J. F. Sauvage , T. Fusco , B. Neichel , J. Milli

Second Order Operators (SOOs) are database functions which form secondary queries based on attributes of the objects returned in an initial query; they can provide powerful methods to investigate complex, multipartite information graphs.…

Digital Libraries · Computer Science 2020-10-06 Michael J. Kurtz , Roman Chyla

The Southern Robotic Adaptive Optics (SRAO) instrument will bring the proven high-efficiency capabilities of Robo-AO to the Southern-Hemisphere, providing the unique capability to image with high-angular-resolution thousands of targets per…

Instrumentation and Methods for Astrophysics · Physics 2016-11-23 Carl Ziegler , Nicholas M. Law , Andrei Tokovinin

Modern astronomical surveys such as the Large Synoptic Sky Survey (LSST) promise an unprecedented wealth of discoveries, delivered in the form of ~10 million alerts of time-variable events per night. Astronomers are faced with the daunting…

Instrumentation and Methods for Astrophysics · Physics 2018-06-26 R. A. Street , M. Bowman , E. S. Saunders , T. Boroson

In the era of big data astronomy, next generation telescopes and large sky surveys produce data sets at the TB or even PB level. Due to their large data volumes, these astronomical data sets are extremely difficult to transfer and analyze…

The rapid progress of Transformers in artificial intelligence has come at the cost of increased resource consumption and greenhouse gas emissions due to growing model sizes. Prior work suggests using pretrained small models to improve…

Machine Learning · Computer Science 2024-02-13 Yu Pan , Ye Yuan , Yichun Yin , Jiaxin Shi , Zenglin Xu , Ming Zhang , Lifeng Shang , Xin Jiang , Qun Liu

Since May 2006, the two STELLA robotic telescopes at the Izana observatory in Tenerife, Spain, delivered an almost uninterrupted stream of scientific data. To achieve such a high level of autonomous operation, the replacement of all…

Instrumentation and Methods for Astrophysics · Physics 2010-10-19 Thomas Granzer , Michael Weber , Klaus G. Strassmeier

The direct imaging of potentially habitable Exoplanets is one prime science case for the next generation of high contrast imaging instruments on ground-based extremely large telescopes. To reach this demanding science goal, the instruments…

Robo-AO is the first astronomical laser guide star adaptive optics (AO) system designed to operate completely independent of human supervision. A single computer commands the AO system, the laser guide star, visible and near-infrared…

We introduce a kind of partial observability to the projective simulation (PS) learning method. It is done by adding a belief projection operator and an observability parameter to the original framework of the efficiency of the PS model. I…

Artificial Intelligence · Computer Science 2023-05-08 Rasoul Kheiri

As part of the Portuguese Space Surveillance and Tracking (SST) program, a tracking radar and a double Wide Field of View Telescope system (4.3{\deg} x 2.3{\deg}) are being installed at the Pampilhosa da Serra Space Observatory (PASO) in…

Instrumentation and Methods for Astrophysics · Physics 2022-11-09 Bruno Coelho , Domingos Barbosa , Miguel Bergano , João Pandeirada , Paulo Marques , Alexandre C. M. Correia , José Matias de Freitas

The Stellar Observations Network Group prototype telescope at the Teide Observatory has been operating in scientific mode since March 2014. The first year of observations has entirely been carried out using the high resolution echelle…

Instrumentation and Methods for Astrophysics · Physics 2019-01-25 M. F. Andersen , F. Grundahl , A. H. Beck , P. Pallé

The contemporary astronomy is flooded with an exponentially growing petabyte-scaled data volumes produced by powerful ground and space-based instrumentation as well as a product of extensive computer simulations and computations of complex…

Instrumentation and Methods for Astrophysics · Physics 2018-03-14 Petr Škoda

One of the most regular activities of amateur clubs is scientific outreach, a paramount channel to disseminate scientific results. It is typically performed through talks given by both experts (professional astronomers) and non-experts to a…

We investigate beam training and allocation for multiuser millimeter wave massive MIMO systems. An orthogonal pilot based beam training scheme is first developed to reduce the number of training times, where all users can simultaneously…

Signal Processing · Electrical Eng. & Systems 2019-01-08 Xuyao Sun , Chenhao Qi , Geoffrey Ye Li

Pretraining methods gain increasing attraction recently for solving PDEs with neural operators. It alleviates the data scarcity problem encountered by neural operator learning when solving single PDE via training on large-scale datasets…

Machine Learning · Computer Science 2024-11-28 Tian Wang , Chuang Wang

Pretraining for partial differential equation (PDE) modeling has recently shown promise in scaling neural operators across datasets to improve generalizability and performance. Despite these advances, our understanding of how pretraining…

Machine Learning · Computer Science 2024-10-03 Anthony Zhou , Cooper Lorsung , AmirPouya Hemmasian , Amir Barati Farimani

We describe the operational capabilities of the Las Cumbres Observatory Global Telescope Network. We summarize our hardware and software for maintaining and monitoring network health. We focus on methodologies to utilize the automated…

The results of a study of the accuracy characteristics and image quality on the SAO RAS optical telescopes, Zeiss-1000 and BTA, using the recently developed "Telescope Analyzer" device are described: a method for determining the…

Instrumentation and Methods for Astrophysics · Physics 2025-02-14 Edward Emelianov

Neural operators have emerged as promising surrogate models for solving partial differential equations (PDEs), but struggle to generalise beyond training distributions and are often constrained to a fixed temporal discretisation. This work…