103 research outputs found
High-resolution imaging at the SOAR telescope
Bright single and binary stars were observed at the 4.1-m telescope with a
fast electron-multiplication camera in the regime of partial turbulence
correction by the visible-light adaptive optics system. We compare the angular
resolution achieved by simple averaging of AO-corrected images (long-exposure),
selection and re-centering (shift-and-add or "lucky" imaging) and speckle
interferometry. The effect of partial AO correction, vibrations, and image
post-processing on the attained resolution is shown. Potential usefulness of
these techniques is evaluated for reaching the diffraction limit in
ground-based optical imaging. Measurements of 75 binary stars obtained during
these tests are given and objects of special interest are discussed. We report
tentative resolution of the astrometric companion to Zeta Aqr B. A concept of
advanced high-resolution camera is outlined.Comment: Accepted for publication in PASP. 14 pages, 9 figures, 2 tabl
Achievable information rates estimation for 100-nm ramana amplified optical transmission system
The achievable information rates of optical communication systems using ultra-wide bandwidth 100-nm distributed Raman amplification have been investigated for each individual subchannels, based on the first-order perturbative analysis of nonlinear distortions
Kinetics of color change of osmotically dehydrated chub mackerel (Scomber japonicus) during storage at different temperatures
An artificial neural network model for prediction of quality characteristics of apples during convective dehydration
4 Tb/s Transmission Reach Enhancement Using 10 x 400 Gb/s Super-Channels and Polarization Insensitive Dual Band Optical Phase Conjugation
In this paper, we experimentally demonstrate the benefit of polarization insensitive dual-band optical phase conjugation for up to ten 400 Gb/s optical super-channels using a Raman amplified transmission link with a realistic span length of 75 km. We demonstrate that the resultant increase in transmission distance may be predicted analytically if the detrimental impacts of power asymmetry and polarization mode dispersion are taken into account
Structural analysis and shape-dependent catalytic activity of Au, Pt and Au/Pt nanoparticles
Review on the transmission porcine reproductive and respiratory syndrome virus between pigs and farms and impact on vaccination
A scoping review protocol on precarious work in a European context
Item is not available in this repository.https://doi.org/10.37766/inplasy2024.4.0039pubpu
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