Results 11 to 20 of about 348,356 (178)
Vibration compensation of wavelength scanning interferometer for in-process surface inspection [PDF]
, 2010 A vibration stabilized Wavelength Scanning Interferometer (WSI) is developed for online or in-process measurement purposes. This paper describes the vibration compensation part of the WSI system.
Gao, F. +2 more
core +3 more sources
The first astronomical mm and submm observations with multi-Fourier transform interferometer
The first astronomical mm and submm observations with multi-Fourier transform interferometerapplication/pdf 学術論文 (Article) 科研費報告書収録論文(課題番号:16204010/研究代表者:服部誠/超広帯域・超高感度・超広視野ミリ波サブミリ波天体干渉計の開発) 1061528 ...
exaly +2 more sources
The Celestial Reference Frame at K Band: Imaging. I. The First 28 Epochs
The Astronomical Journal, 2023 We present K -band (24 GHz) images of 731 compact extragalactic radio sources with submilliarcsecond resolution, based on radio interferometric observations made with the Very Long Baseline Array of 10 telescopes during 29 day long sessions spanning from
Aletha de Witt +6 more
doaj +1 more source
WAMDII: wide-angle Michelson Doppler imaging interferometer for Spacelab [PDF]
, 1985 A wide-angle Michelson Doppler imaging interferometer (WAMDII) is described that is intended to measure upper atmospheric winds and temperatures from naturally occurring visible region emissions, using Spacelab as a platform.
Gault, W.A. +8 more
core +1 more source
Astronomical applications of interferometer [PDF]
Nature, 1975 The Intensity Interferometer: Its Application to Astronomy. By R. Hanbury Brown. Pp. xvi + 184. (Taylor and Francis: London, November 1974.) £6.
openaire +1 more source
Astrophysics with the Laser Interferometer Space Antenna
Living Reviews in Relativity, 2023 The Laser Interferometer Space Antenna (LISA) will be a transformative experiment for gravitational wave astronomy, and, as such, it will offer unique opportunities to address many key astrophysical questions in a completely novel way.
Pau Amaro-Seoane +157 more
doaj +1 more source
On the Possibility of Breaking the Heterodyne Detection Quantum Noise Limit With Cross-Correlation
IEEE Access, 2018 The cross-correlation sensitivity of two identical balanced photodiode heterodyne receivers is characterized. Both the balanced photodiodes receive the same weak signal split up equally, a situation equivalent to an astronomical spatial interferometer. A
Ernest A. Michael, Felipe E. Besser
doaj +1 more source
JPhys Photonics, 2023 Photonic technologies offer numerous functionalities that can be used to realize astrophotonic instruments. The most spectacular example to date is the ESO Gravity instrument at the Very Large Telescope in Chile that combines the light-gathering power of
Nemanja Jovanovic +79 more
doaj +1 more source
Optimization of a field-widened Michelson interferometer [PDF]
, 1985 This paper considers the optical design of a wide-angle fixed-path Michelson interferometer consisting of two arm glasses and an air gap. It is shown that this configuration can be optimized to give (a) extra large fringes (over 50° in diameter) over a
Gault, W.A. +5 more
core +1 more source
The 5.25 & 5.7 $\mu$m Astronomical Polycyclic Aromatic Hydrocarbon Emission Features [PDF]
, 2008 Astronomical mid-IR spectra show two minor PAH features at 5.25 and 5.7 $\mu$m (1905 and 1754 cm$^{\rm - 1}$) that hitherto have been little studied, but contain information about the astronomical PAH population that complements that of the major ...
Boersma, C. +6 more
core +1 more source