Results 1 to 10 of about 136,660 (228)
High-accuracy differential image motion monitor measurements for the Thirty Meter Telescope site testing program [PDF]
Applied Optics, 2007 Differential image motion monitors (DIMMs) have become the industry standard for astronomical site characterization. The calibration of DIMMs is generally considered to be routine, but we show that particular care must be paid to this issue if high-accuracy measurements are to be achieved.
Wang, Lianqi +12 more
core +8 more sources
A generalized differential image motion monitor [PDF]
Monthly Notices of the Royal Astronomical Society, 2019 We present the Generalised Differential Image Motion Monitor. It is a compact instrument dedicated to measure 4 parameters of the optical turbulence: seeing, isoplanatic angle, coherence time and wavefront coherence outer scale. GDIMM is based on a small telescope (28cm diameter) equipped with a 3-holes mask at its entrance pupil.
Aristidi, E. +5 more
openaire +5 more sources
Astronomical Seeing at Maidanak Observatory during the Year 2018
Galaxies, 2021 Results of a four-month campaign of astronomical seeing measurements at Maidanak astronomical observatory (MAO) are presented. A differential image motion monitor (DIMM) was used for seeing estimations during the period from August to November 2018.
Yusufjon Tillayev +2 more
doaj +1 more source
Turbulence monitoring at Calern observatory with the generalized differential image motion monitor [PDF]
Adaptive Optics Systems VII, 2020 SPIE Proceedings Volume 11448, Adaptive Optics Systems VII; 114484Z (2020) arXiv admin note: text overlap with arXiv:1904 ...
Aristidi, Eric +6 more
openaire +3 more sources
Astronomical Seeing and Meteorological Parameters at Maidanak Observatory
Atmosphere, 2023 In this article, we present the results of astronomical seeing measurements conducted at the Maidanak observatory and the influence of meteorological parameters on astronomical seeing.
Yusufjon Tillayev +3 more
doaj +1 more source
PLoS Computational Biology, 2021 Biomechanical forces intimately contribute to cardiac morphogenesis. However, volumetric imaging to investigate the cardiac mechanics with high temporal and spatial resolution remains an imaging challenge. We hereby integrated light-field microscopy (LFM)
Zhaoqiang Wang +5 more
doaj +1 more source
Investigation of the Global Spatio-Temporal Characteristics of Astronomical Seeing
Remote Sensing, 2023 Astronomical seeing is important for monitoring the atmospheric environment, observation scheduling and management, and selecting astronomical sites.
Cuicui Bi +5 more
doaj +1 more source
A new generalized differential image motion monitor [PDF]
SPIE Proceedings, 2014 We present first results of a new instrument, the Generalized Differential Image Motion Monitor (GDIMM), aiming at monitoring parameters of the optical turbulence (seeing, isoplanatic angle, coherence time and outer scale). GDIMM is based on a small telescope equipped with a 3-holes mask at its entrance pupil.
Aristidi, Eric +5 more
openaire +3 more sources
First day-time seeing observations at the Observatory of University of Zanjan in Iran [PDF]
Iranian Journal of Astronomy and Astrophysics, 2018 Recognition of the appropriate locations for ground-based observations of the Sun with high angular resolution depends on the factors such as seeing, meteorological and astronomical parameters.
Pardis Ahmadi +3 more
doaj +1 more source
Multiwavelength differential image motion monitor
Optics Express, 2002 Astronomical seeing measurements are usually made at a single wavelength and extrapolated to other wavelengths of interest using scaling laws that assume a specific energy spectrum for the atmospheric turbulence. We describe a variation of the Differential Image Motion Monitor system that provides a measure of the seeing and evaluation of the scaling ...
Dale, Neimeier +4 more
openaire +2 more sources