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The Infra-Red Imaging Spectrograph (IRIS) is one of the three first light instruments for the Thirty Meter Telescope (TMT) and is the only one to directly sample the diffraction limit. The instrument consists of a parallel imager and…

Instrumentation and Methods for Astrophysics · Physics 2015-05-19 Anna M. Moore , Brian J. Bauman , Elizabeth J. Barton , David Crampton , Alex Delacroix , James E. Larkin , Luc Simard , Ryuji Suzuki , Shelley A. Wright

The Prime Focus Spectrograph (PFS) is a wide-field, multi-object spectrograph accommodating 2394 fibers to observe the sky at the prime focus of the Subaru telescope. The software system to operate a spectroscopic survey is structured by…

Instrumentation and Methods for Astrophysics · Physics 2016-12-07 Atsushi Shimono , Naoyuki Tamura , Naruhisa Takato , Naoki Yasuda , Nao Suzuki , Craig P. Loomis , Robert H. Lupton , Yuki Moritani , Kiyoto Yabe

We present a 3-dimensional matched filtering approach for the blind search of faint emission-line sources in integral-field spectroscopic datasets. The filter is designed to account for the spectrally rapidly varying background noise due to…

Instrumentation and Methods for Astrophysics · Physics 2023-03-21 Edmund Christian Herenz

The EXtreme PREcision Spectrograph (EXPRES) is an environmentally stabilized, fiber-fed, $R=137,500$, optical spectrograph. It was recently commissioned at the 4.3-m Lowell Discovery Telescope (LDT) near Flagstaff, Arizona. The spectrograph…

Spectral line intensity mapping has been proposed as a promising tool to efficiently probe the cosmic reionization and the large-scale structure. Without detecting individual sources, line intensity mapping makes use of all available…

Cosmology and Nongalactic Astrophysics · Physics 2016-12-14 Yun-Ting Cheng , Tzu-Ching Chang , James Bock , C. Matt Bradford , Asantha Cooray

PFS (Prime Focus Spectrograph), a next generation facility instrument on the 8.2-meter Subaru Telescope, is a very wide-field, massively multiplexed, optical and near-infrared spectrograph. Exploiting the Subaru prime focus, 2394…

Instrumentation and Methods for Astrophysics · Physics 2016-12-14 Naoyuki Tamura , Naruhisa Takato , Atsushi Shimono , Yuki Moritani , Kiyoto Yabe , Yuki Ishizuka , Akitoshi Ueda , Yukiko Kamata , Hrand Aghazarian , Stephane Arnouts , Gabriel Barban , Robert H. Barkhouser , Renato C. Borges , David F. Braun , Michael A. Carr , Pierre-Yves Chabaud , Yin-Chang Chang , Hsin-Yo Chen , Masashi Chiba , Richard C. Y. Chou , You-Hua Chu , Judith G. Cohen , Rodrigo P. de Almeida , Antonio C. de Oliveira , Ligia S. de Oliveira , Richard G. Dekany , Kjetil Dohlen , Jesulino B. dos Santos , Leandro H. dos Santos , Richard S. Ellis , Maximilian Fabricius , Didier Ferrand , Decio Ferreira , Mirek Golebiowski , Jenny E. Greene , Johannes Gross , James E. Gunn , Randolph Hammond , Albert Harding , Murdock Hart , Timothy M. Heckman , Christopher M. Hirata , Paul Ho , Stephen C. Hope , Larry Hovland , Shu-Fu Hsu , Yen-Shan Hu , Ping-Jie Huang , Marc Jaquet , Yipeng Jing , Jennifer Karr , Masahiko Kimura , Matthew E. King , Eiichiro Komatsu , Vincent Le Brun , Olivier Le Fevre , Arnaud Le Fur , David Le Mignant , Hung-Hsu Ling , Craig P. Loomis , Robert H. Lupton , Fabrice Madec , Peter Mao , Lucas S. Marrara , Claudia Mendes de Oliveira , Yosuke Minowa , Chaz N. Morantz , Hitoshi Murayama , Graham J. Murray , Youichi Ohyama , Joseph Orndorff , Sandrine Pascal , Jefferson M. Pereira , Daniel J. Reiley , Martin Reinecke , Andreas Ritter , Mitsuko Roberts , Mark A. Schwochert , Michael D. Seiffert , Stephen A. Smee , Laerte Sodre , David N. Spergel , Aaron J. Steinkraus , Michael A. Strauss , Christian Surace , Yasushi Suto , Nao Suzuki , John Swinbank , Philip J. Tait , Masahiro Takada , Tomonori Tamura , Yoko Tanaka , Laurence Tresse , Orlando Verducci , Didier Vibert , Clement Vidal , Shiang-Yu Wang , Chih-Yi Wen , Chi-Hung Yan , Naoki Yasuda

We consider the data-aided channel estimation (CE) problem in a reconfigurable intelligent surface (RIS)-assisted wireless communication system, where the channel and information symbols are estimated jointly during the CE phase,…

Signal Processing · Electrical Eng. & Systems 2025-06-17 Amarilton Lopes Magalhães , André Lima Férrer de Almeida , Gilderlan Tavares de Araújo

We present the final reduction and calibration of the FIRBACK ISOPHOT data. FIRBACK is a deep cosmological survey performed at 170 microns. This paper deals with the ISOPHOT C200 camera with the C160 filter. We review the whole data…

Astrophysics · Physics 2009-11-06 Guilaine Lagache , Herve Dole

Context. The Large Array Survey Telescope (LAST) is a wide-field visual-band survey designed to explore the variable and transient sky with high cadence. Its raw data stream is automatically processed in near real time at the observatory…

A new method for analyzing the returns of the custom-made 'micro'-LIDAR system, which is operated along with the two MAGIC telescopes, allows to apply atmospheric corrections in the MAGIC data analysis chain. Such corrections make it…

Instrumentation and Methods for Astrophysics · Physics 2019-08-13 Christian Fruck , Markus Gaug , Roberta Zanin , Daniela Dorner , Daniel Garrido , Razmik Mirzoyan , Lluis Font

We describe the development of automated emission line detection software for the Fiber Multi-Object Spectrograph (FMOS), which is a near-infrared spectrograph fed by $400$ fibers from the $0.2$ deg$^2$ prime focus field of view of the…

Instrumentation and Methods for Astrophysics · Physics 2015-06-17 Motonari Tonegawa , Tomonori Totani , Fumihide Iwamuro , Masayuki Akiyama , Gavin Dalton , Karl Glazebrook , Kouji Ohta , Hiroyuki Okada , Kiyoto Yabe

We present the first public version of SImMER, an open-source Python reduction pipeline for astronomical images of point sources. Current capabilities include dark-subtraction, flat-fielding, sky-subtraction, image registration, FWHM…

Instrumentation and Methods for Astrophysics · Physics 2022-12-28 Arjun B. Savel , Lea A. Hirsch , Holden Gill , Courtney D. Dressing , David R. Ciardi

We present a new procedure rooted in deep learning to construct science images from data cubes collected by astronomical instruments using HxRG detectors in low-flux regimes. It improves on the drawbacks of the conventional algorithms to…

Instrumentation and Methods for Astrophysics · Physics 2022-05-30 Guillaume Payeur , Étienne Artigau , Laurence Perreault-Levasseur , René Doyon

The Mid-Infrared Instrument (MIRI) Medium Resolution Spectrometer (MRS) is the only mid-IR Integral Field Spectrometer on board James Webb Space Telescope. The complexity of the MRS requires a very specialized pipeline, with some specific…

Reconfigurable intelligent surface (RIS) is a promising technology to enhance the spectral and energy efficiency in a wireless communication system. The design of the phase shifts of an RIS in every channel coherence interval demands a huge…

Signal Processing · Electrical Eng. & Systems 2024-05-15 Sadaf Syed , Dominik Semmler , Donia Ben Amor , Michael Joham , Wolfgang Utschick

Filter pruning has been widely used for neural network compression because of its enabled practical acceleration. To date, most of the existing filter pruning works explore the importance of filters via using intra-channel information. In…

Computer Vision and Pattern Recognition · Computer Science 2022-04-05 Yang Sui , Miao Yin , Yi Xie , Huy Phan , Saman Zonouz , Bo Yuan

Different types of spectroscopies, such as X-ray absorption near edge structure (XANES) and Raman spectroscopy, play a very important role in analyzing the characteristics of different materials. In scientific literature, XANES/Raman data…

Computer Vision and Pattern Recognition · Computer Science 2021-07-08 Weixin Jiang , Eric Schwenker , Trevor Spreadbury , Kai Li , Maria K. Y. Chan , Oliver Cossairt

This paper presents a large-scale strip adjustment method for LiDAR mobile mapping data, yielding highly precise maps. It uses several concepts to achieve scalability. First, an efficient graph-based pre-segmentation is used, which directly…

Distributed, Parallel, and Cluster Computing · Computer Science 2016-09-27 Claus Brenner

Data reduction procedures are aimed to minimize the impact of data acquisition imperfections on the measurement of data properties with a scientific meaning for the astronomer. To achieve this purpose, appropriate arithmetic manipulations…

As global climate change severely impacts our world, there is an increasing demand to monitor trace gases with a high spatial resolution and accuracy. At the same time, these instruments need to be compact in order have constellations for…

Optics · Physics 2025-08-14 Marijn Siemons , Ralf Kohlhaas