Results 1 to 10 of about 334,482 (142)

National Ignition Facility small optics laser-induced damage and photometry measurements program [PDF]

, 1999
The National Ignition Facility will require upwards of 25,000 small optical components in its various beam conditioning and diagnostic packages. A quality control program designed to ensure that the elements meet the required specifications will test ...
Sheehan, L, Battersby, C, Hendrix, J, Oberhelman, S   +3 more
exaly   +1 more source

Transit photometry with ShaneAO

Alexander Chaushev
exaly  

III. On photometry in connexion with physical optics

London and Edinburgh Philosophical Magazine and Journal of Science
exaly  

Multi-Site Simultaneous Time-Resolved Photometry with a Low Cost Electro-Optics System

Sensors, 2017
Sunlight reflected off of resident space objects can be used as an optical signal for astrometric orbit determination and for deducing geometric information about the object.
Forrest Gasdia, Aroh Barjatya, Sergei Bilardi   +2 more
doaj   +3 more sources

Fast Inline Microscopic Computational Imaging

Sensors, 2022
Inline inspection is becoming an essential tool for industrial high-quality production. Unfortunately, the desired acquisition speeds and needs for high-precision imaging are often at the limit of what is physically possible, such as a large field of ...
Laurin Ginner, Simon Breuss, Lukas Traxler   +2 more
doaj   +1 more source

Influence of Mie scattering on nanoparticles with different particle sizes and shapes: photometry and analytical ultracentrifugation with absorption optics [PDF]

Journal of the Serbian Chemical Society, 2005
Nanoparticles are used in large quantities for very different applications. A precise determination of the diameter and the particle size distribution which is responsible for the application properties is therefore essential.
M. D. LECHNER
doaj   +3 more sources

JWST Observations of the Enigmatic Y-Dwarf WISE 1828+2650. I. Limits to a Binary Companion

The Astrophysical Journal, 2023
The Y-dwarf WISE 1828+2650 is one of the coldest known brown dwarfs with an effective temperature of ∼300 K. Located at a distance of just 10 pc, previous model-based estimates suggest WISE1828+2650 has a mass of ∼5–10 M _J , making it a valuable ...
Matthew De Furio, Ben Lew, Charles Beichman, Thomas Roellig, Geoffrey Bryden, David Ciardi, Michael Meyer, Marcia Rieke, Alexandra Greenbaum, Jarron Leisenring, Jorge Llop-Sayson, Marie Ygouf, Loic Albert, Martha Boyer, Daniel Eisenstein, Klaus Hodapp, Scott Horner, Doug Johnstone, Doug Kelly, Karl Misselt, George Rieke, John Stansberry, Erick Young   +22 more
doaj   +1 more source

Macular pigment optical density measured by heterochromatic modulation photometry. [PDF]

PLoS ONE, 2014
PURPOSE:To psychophysically determine macular pigment optical density (MPOD) employing the heterochromatic modulation photometry (HMP) paradigm by estimating 460 nm absorption at central and peripheral retinal locations. METHODS:For the HMP measurements,
Cord Huchzermeyer, Juliane Schlomberg, Ulrich Welge-Lüssen, Tos T J M Berendschot, Joel Pokorny, Jan Kremers   +5 more
doaj   +1 more source

Modeling and Analysis of an Echo Laser Pulse Waveform for the Orientation Determination of Space Debris

Remote Sensing, 2020
Orientation information of space debris is required to improve the orbital prediction accuracy for mitigation or elimination of a significant threat to not only human space activities but also operational satellites.
Hyung-Chul Lim, Zhong-Ping Zhang, Ki-Pyoung Sung, Jong Uk Park, Simon Kim, Chul-Sung Choi, Mansoo Choi   +6 more
doaj   +1 more source

Evaluation of Multiangle Absorption Photometry for Measuring Aerosol Light Absorption [PDF]

, 2005
A new multiangle absorption photometer for the measurement of aerosol light absorption was recently introduced that builds on the simultaneous measurement of radiation transmitted through and scattered back from a particle-loaded fiber filter at multiple
Arnott, W.P., Sheridan, P.J., Petzold, A., Schloesser, H., Virkkula, A., Ogren, J.A.   +5 more
core   +1 more source