Results 11 to 20 of about 48,891 (290)

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.
Lombardo, Simona, Behaghel, Thibault, Chambion, Bertrand, Caplet, Stéphane, Jahn, Wilfried, Hugot, Emmanuel, Muslimov, Eduard, Roulet, Melanie, Ferrari, Marc, Gaschet, Christophe, Henry, David   +10 more
exaly   +12 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.
Nagata, Hirohisa, Shibai, Hiroshi, Hirao, Takanori, Watabe, Toyoki, Noda, Manabu, Hibi, Yasunori, Kawada, Mitsunobu, Nakagawa, Takao   +7 more
openaire   +4 more sources

Characterization of mid-infrared intersubband detectors for astronomical heterodyne interferometry

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
openaire   +5 more sources

Review of Compton camera imaging technology development

He jishu, 2021
Compton camera (CC) is a new type gamma-ray imaging modality. Because CC has no mechanical collimation structure, it has unique advantages in detection efficiency compared with other gamma-ray imaging modalities.
WU Chuanpeng, LI Liang
doaj   +1 more source

Focal length determination for the 60cm telescope at Astronomical station Vidojevica [PDF]

Serbian Astronomical Journal, 2012
The focal length of a telescope is an important parameter in determining the angular pixel size. This parameter is used for the purpose of determining the relative coordinates (angular separation and positional angle) of double and multiple ...
Cvetković Z., Damljanović G., Pavlović R., Vince O., Milić I.S., Stojanović M.   +5 more
doaj   +1 more source

Astronomical Camera Based on a CCD261-84 Detector with Increased Sensitivity in the Near-Infrared

Photonics, 2023
Herein, we describe the design, implementation and operation principles of an astronomical camera system, based on a large-format CCD261-84 detector with an extremely thick 200 μm substrate.
Irina Afanasieva, Valery Murzin, Valery Ardilanov, Nikolai Ivaschenko, Maksim Pritychenko, Alexei Moiseev, Elena Shablovinskaya, Eugene Malygin   +7 more
doaj   +1 more source

Equalizing the Pixel Response of the Imaging Photoelectric Polarimeter Onboard the IXPE Mission

The Astronomical Journal, 2023
The Gas Pixel Detector is a gas detector, sensitive to the polarization of X-rays, currently flying onboard the Imaging X-ray Polarimetry Explorer (IXPE)—the first observatory dedicated to X-ray polarimetry.
John Rankin, Fabio Muleri, Alessandro Di Marco, Sergio Fabiani, Fabio La Monaca, Paolo Soffitta, Matteo Bachetti, Luca Baldini, Enrico Costa, Niccolò Di Lalla, Alberto Manfreda, Stephen L. O’Dell, Matteo Perri, Simonetta Puccetti, Brian D. Ramsey, Carmelo Sgrò, Allyn F. Tennant, Antonino Tobia, Alessio Trois, Martin C. Weisskopf, Fei Xie   +20 more
doaj   +1 more source

Input Power and Effective Area in Terahertz Detector Measurement: A Review

IEEE Access, 2023
The field of terahertz (THz) science and technology research area have been exponentially growing recently, motivated by the increasing demand for safer security imaging, better quality control within manufacturing industries, space and astronomical ...
Arie Pangesti Aji, Catur Apriono, Eko Tjipto Rahardjo   +2 more
doaj   +1 more source

The Growth of Interest in Astronomical X-Ray Polarimetry

Galaxies, 2018
Astronomical X-ray polarimetry was first explored in the end of the 1960s by pioneering rocket instruments. The craze arising from the first discoveries of stellar and supernova remnant X-ray polarization led to the addition of X-ray polarimeters to ...
Frédéric Marin
doaj   +1 more source

Precision Projector Laboratory: detector characterization with an astronomical emulation testbed [PDF]

Journal of Astronomical Telescopes, Instruments, and Systems, 2019
As astronomical observations from space benefit from improved sensitivity, the effectiveness of scientific programs is becoming limited by systematics that often originate in poorly understood image sensor behavior. Traditional, bottom-up detector characterization methods provide one way to model underlying detector physics, and generate ever more ...
Shapiro, Charles, Smith, Roger, Huff, Eric, Plazas, Andrés A., Rhodes, Jason, Fucik, Jason, Goodsall, Tim, Massey, Richard, Rowe, Barnaby, Seshadri, Suresh   +9 more
openaire   +3 more sources