Results 51 to 60 of about 170,397 (209)

Implementation of a Large-Area Diffractive Lens Using Multiple Sub-Aperture Diffractive Lenses and Computational Reconstruction

Photonics, 2022
Direct imaging systems that create an image of an object directly on the sensor in a single step are prone to many constraints, as a perfect image is required to be recorded within this step.
Shivasubramanian Gopinath, Praveen Periysamy Angamuthu, Tauno Kahro, Andrei Bleahu, Francis Gracy Arockiaraj, Daniel Smith, Soon Hock Ng, Saulius Juodkazis, Kaupo Kukli, Aile Tamm, Vijayakumar Anand   +10 more
doaj   +1 more source

Implementing of the ISON project in Northern Mexico

Open Astronomy, 2018
ISON, being an open international project that collects and interprets data about space objects for scientific analysis and spacecraft operators, includes about 40 observational sites.
Mokhnatkin Artem, Molotov Igor, Tijerina Eduardo Gerardo Perez, Leon José Enrique Perez, Kokina Tatiana, Schildknecht Thomas   +5 more
doaj   +1 more source

Structure of distributed control system in Seimei telescope

SICE Journal of Control, Measurement, and System Integration, 2021
A segmented mirror control system is indispensable for operating an astronomical telescope which is equipped with a segmented primary mirror. In this study, we focus on the distributed control system (DCS) proposed for Seimei telescope.
Ichiro Jikuya, Daichi Uchida, Masaru Kino, Mikio Kurita, Katsuhiko Yamada   +4 more
doaj   +1 more source

Long-Term Trends of Astroclimatic Parameters above the Terskol Observatory

Atmosphere, 2023
Astroclimatic conditions characterize the quality of an astronomical site. The Terskol Observatory was founded over 42 years ago in 1980. The astronomical site (coordinates 43°16′29″ N, 42°30′03″ E) is located about 10 km from Mt.
Lidia A. Bolbasova, Evgeniy A. Kopylov
doaj   +1 more source

The Influence of On-Orbit Micro-Vibration on Space Gravitational Wave Detection

Photonics, 2023
Large-aperture space telescopes have played an important role in space gravitational wave detection missions. Overcoming the influence of the space environment on interstellar laser distance measurement and realistic high-concentration laser distance ...
Zhiwei Chen, Chao Fang, Zhenpeng Wang, Changxiang Yan, Zhi Wang   +4 more
doaj   +1 more source

Optimizing Space Telescopes’ Thermal Performance through Uncertainty Analysis: Identification of Critical Parameters and Shaping Test Strategy Development

Aerospace
The integration of uncertainty analysis methodologies allows for improving design efficiency, particularly in the context of instruments that demand precise pointing accuracy, such as space telescopes.
Uxia Garcia-Luis, Alejandro M. Gomez-San-Juan, Fermin Navarro-Medina, Carlos Ulloa-Sande, Alfonso Yñigo-Rivera, Alba Eva Peláez-Santos   +5 more
doaj   +1 more source

Multi-Channel Optical Receiver for Ground-Based Topographic Hyperspectral Remote Sensing

Remote Sensing, 2019
Receiver design is integral to the development of a new remote sensor. An effective receiver delivers backscattered light to the detector while optimizing the signal-to-noise ratio at the desired wavelengths. Towards the goal of effective receiver design,
Sean E. Salazar, Richard A. Coffman
doaj   +1 more source

Creative Telescoping

CoRR
These notes on creative telescoping are based on a series of lectures at the Institut Henri Poincare in November and December 2023.
Shaoshi Chen, Manuel Kauers, Christoph Koutschan   +2 more
openaire   +2 more sources

A Comprehensive Exploration of Contemporary Photonic Devices in Space Exploration: A Review

Photonics
Photonics plays a pivotal role in propelling space exploration forward, providing innovative solutions to address the challenges presented by the unforgiving and expansive realm of outer space.
Muhammad A. Butt
doaj   +1 more source

The MAGIC telescope [PDF]

Proceedings of International Europhysics Conference on High Energy Physics — PoS(HEP2005), 2007
MAGIC (Major Atmospheric Gamma Imaging Cherenkov telescope) is presently the largest ground-based gamma ray telescope. MAGIC has been taking data regularly since October 2004 at the Roque de los Muchachos Observatory on the island of La Palma. In this paper the MAGIC telescope status, its performances and some preliminary results on observed gamma ray ...
openaire   +2 more sources