Results 101 to 110 of about 669,031 (383)

Advances in Hybrid Icing and Frosting Protection Strategies for Optics, Lens, and Photonics in Cold Environments Using Thin‐Film Acoustic Waves

Advanced Engineering Materials, EarlyView.
This article provides a comprehensive overview of fundamentals and recent advances of transparent thin‐film surface acoustic wave technologies on glass substrates for monitoring and prevention/elimination of fog, ice, and frost. Fogging, icing, or frosting on optical lenses, optics/photonics, windshields, vehicle/airplane windows, and solar panel ...
Hui Ling Ong, Zhangbin Ji, Luke Haworth, Yihao Guo, Jaime del Moral, Stefan Jacob, Ana Borras, Agustin R. Gonzalez‐Elipe, Jikai Zhang, Jian Zhou, Glen McHale, Yong‐Qing Fu   +11 more
wiley   +1 more source

A SKELETON TELESCOPE [PDF]

School Science and Mathematics, 1902
n ...
openaire   +2 more sources

SNAP Telescope [PDF]

SPIE Proceedings, 2002
Supernovae
Lampton, Michael L., Akerlof, C. W., Aldering, G., Amanullah, R., Astier, P., Barrelet, E., Bebek, C., Bergstrom, L., Bercovitz, J., Bernstein, G., Bester, M., Bonissent, A., Bower, C., Carithers, W. C., Jr., Commins, E. D., Day, C., Deustua, S. E., DiGennaro, R., Ealet, A., Ellis, R. S., Eriksson, M., Fruchter, A., Genat, J.F., Goldhaber, G., Goobar, A., Groom, D., Harris, S. E., Harvey, P. R., Heetderks, H. D., Holland, S. E., Huterer, D., Karcher, A., Kim, A. G., Kolbe, W., Krieger, B., Lafever, R., Lamoureux, J., Levi, M. E., Levin, D. S., Linder, E. V., Loken,S. C., Malina, R., Massey, R., McKay, T., McKee, S. P., Miquel, R., Mortsell, E., Mostek, N., Mufson, S., Musser, J., Nugent, P., Oluseyi, H., Pain, R., Palaio, N., Pankow, D., Perlmutter, S., Pratt, R., Prieto, E., Refregier, A., Rhodes, J., Robinson, K., Roe, N., Sholl, M., Schubnell, M., Smadja, G., Smoot, G., Spadafora, A., Tarle, G., Tomasch, A., von der Lippe, H., Vincent, R., Walder, J.P., Wang, G.   +72 more
openaire   +4 more sources

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

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

Monitoring and Maintaining Laser Surface Texture Quality Based on Acoustic and Optical Process Emissions during Direct Laser Interference Patterning

Advanced Engineering Materials, EarlyView.
Acoustic emissions during direct laser interference patterning are shown to strongly correlate with surface texture depth. By implementing a closed‐loop control system utilizing acoustic feedback, consistent microstructures with uniform depth are achieved despite laser power fluctuations.
Tobias Steege, Frederic Schell, Adrian Belkin, Christoph Zwahr, Andrés F. Lasagni   +4 more
wiley   +1 more source

Scientific performance analysis of the SYZ telescope design vs. the RC telescope design [PDF]

, 2017
Recently, Su et al. (2016) propose a telescope design, referred as the "SYZ" design, for Chinese new project of a 12m optical-infrared telescope. The SYZ telescope design consists of three aspheric mirrors with non-zero power, including a relay mirror below the primary mirror.
arxiv   +1 more source

The Telescope

Scientific American, 1907
n ...
openaire   +2 more sources

Statistics of the Optical Turbulence from the Micrometeorological Measurements at the Baykal Astrophysical Observatory Site

Atmosphere, 2019
The paper focuses on the investigations of the optical turbulence structure. The distributions of the repeatability of the structure characteristic of the air refractive index are obtained. A scenario of decreasing the intensity of the optical turbulence
Artem Shikhovtsev, Pavel Kovadlo, Vladimir Lukin, Victor Nosov, Alexander Kiselev, Dmitry Kolobov, Evgeny Kopylov, Maxim Shikhovtsev, Fedor Avdeev   +8 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