Results 1 to 10 of about 3,036 (288)

Curved detectors for astronomical applications: characterization results on different samples [PDF]

Applied Optics, 2019
Due to the increasing dimension, complexity and cost of the future astronomical surveys, new technologies enabling more compact and simpler systems are required. The development of curved detectors allows to enhance the performances of the optical system used (telescope or astronomical instrument), while keeping the system more compact.
Simona Lombardo, Eduard Muslimov, Emmanuel Hugot   +2 more
exaly   +16 more sources

Characterization of mid-infrared intersubband detectors for astronomical heterodyne interferometry [PDF]

Optical and Infrared Interferometry and Imaging VIII, 2022
One of the major challenges of mid-infrared astronomical heterodyne interferometry is its sensitivity limitations. Detectors capable of handling several 10 GHz bandwidths have been identified as key building blocks of future instruments. Intersubband detectors based on heterostructures have recently demonstrated their ability to provide such ...
Allain, Tituan, Mohammadreza, Mohammadreza, Sirtori, Carlo, Berger, Jean-Philippe   +3 more
exaly   +5 more sources

Astronomical Image Processing with Array Detectors [PDF]

Publications of the Astronomical Society of the Pacific, 2007
31 pages, 5 figures, accepted for publication in the ...
Martin Houde
exaly   +6 more sources

Detectors for the astronomical applications

2009 International Conference on Emerging Trends in Electronic and Photonic Devices & Systems, 2009
Astronomical observations are dependent on focal-plane instruments, and detectors continue to play a key role. The detector technology is evolving rather fast with the large-format CMOS and CCD array mosaics, electron-multiplying CCDs, electron-avalanche photodiode arrays, quantum-well IR photon detectors etc. However, the requirements of artifact-free
Swapan Saha
exaly   +3 more sources

Spatial uniformity and temporal stability of pixel-to-pixel variation in mini-SiTian CMOS detector [PDF]

Scientific Reports
High-precision flat-fields correction is essential for precision astronomical photometry, with pixel-to-pixel variation correction playing a key role.
Guozhen Hu, Linying Mi, Kai Xiao, Haibo Yuan, Yang Huang, Jie Zheng, Hong Wu, Min He, Yu Zhang, Shuai Feng, Xiaolu Li, Hongrui Gu, Bowen Huang, Yuanchang Wang, Shuai Xu, Lin Yang, Wenyuan Cui   +16 more
doaj   +2 more sources

Microwave Receiving System Based on Cryogenic Sensors for the Optical Big Telescope Alt-Azimuth [PDF]

Sensors
This article presents the results of evaluating the possibility of conducting radio astronomy studies in the windows of atmospheric transparency ~100, ~230, and ~350 GHz using the optical Big Telescope Alt-Azimuthal (BTA) of the Special Astrophysical ...
Yurii Balega, Grigory Bubnov, Artem Chekushkin, Victor Dubrovich, Valerian Edelman, Aleksandra Gunbina, Sergey Kapustin, Tatyana Khabarova, Dmitrii Kukushkin, Igor Lapkin, Maria Mansfeld, Andrei Maruhno, Vladimir Parshin, Aleksey Raevskiy, Vladislav Stolyarov, Mikhail Tarasov, Gennady Valyavin, Vyacheslav Vdovin, Grigory Yakopov, Renat Yusupov, Petr Zemlyanukha, Igor Zinchenko   +21 more
doaj   +2 more sources

Ensemble Deep Learning for Real–Bogus Classification with Sky Survey Images [PDF]

Biomimetics
The discovery of the fifth gravitational wave, GW170817, and its electromagnetic counterpart, resulting from the merger of neutron stars by the LIGO and Virgo teams, marked a major milestone in astronomy.
Pakpoom Prommool, Sirikan Chucherd, Natthakan Iam-On, Tossapon Boongoen   +3 more
doaj   +2 more sources

The Cosmos and Crystal Connection: What We Can Learn About Data Compression [PDF]

Structural Dynamics
We use both lossy and lossless compression methods to reduce large amounts of digital data, making it easier to store and manage. Lossy and lossless compression is frequently used in astronomy, to condense the large amount of data collected by ...
Kimberly M. Horvat, Herbert J. Bernstein, Alexei S. Soares, Jean Jakoncic   +3 more
doaj   +2 more sources

Cryogenic Capacitive Transimpedance Amplifier for Astronomical Infrared Detectors

IEEE Transactions on Electron Devices, 2004
We have developed a new capacitive transimpedance amplifier (CTIA) that can be operated at 2 K, and have good performance as readout circuits of astronomical far-infrared array detectors. The circuit design of the present CTIA consists of silicon p-MOSFETs and other passive elements.
H Shibai
exaly   +3 more sources

Exploring the Interaction of Cosmic Rays with Water by Using an Old-Style Detector and Rossi’s Method

Particles, 2023
Cosmic ray air showers are a phenomenon that can be observed on Earth when high-energy particles from outer space collide with the Earth’s atmosphere. These energetic particles in space are called primary cosmic rays and consist mainly of protons (about ...
Marco Arcani, Domenico Liguori, Andrea Grana   +2 more
doaj   +1 more source