Results 11 to 20 of about 20,857 (202)

SAINT (Small Aperture Imaging Network Telescope)—A Wide-Field Telescope Complex for Detecting and Studying Optical Transients at Times from Milliseconds to Years

open access: yesPhotonics, 2023
In this paper, we present a project of a multi-channel wide-field optical sky monitoring system with high temporal resolution—Small Aperture Imaging Network Telescope (SAINT)— mostly built from off-the-shelf components and aimed towards searching and ...
Grigory Beskin   +9 more
doaj   +1 more source

Identifying the Photometric Characteristics and Applicability of Hybrid Solar Lighting

open access: yesEnergies, 2022
The present research aims at promoting the stability and applicability of a hybrid daylighting system combining daylight and artificial light, which eventually enables a constant and pleasant luminous flux of the mixed light delivered by a terminal ...
Hyun-Joo Han   +5 more
doaj   +1 more source

Identification of the Mixing Ratios of Beer-Mixed Beverages by UV/VIS Spectroscopy

open access: yesBeverages, 2023
UV/VIS spectroscopy was used in conjunction with a calibration method to determine the mixing ratio of samples of beer-mixed drinks with mineral water (sour Radler beers) from the food service industry.
Sophia Stinus   +3 more
doaj   +1 more source

Luminosity and photometry [PDF]

open access: yesProceedings of the Royal Society of London, 1897
Abstract The luminosity of the spectrum was determined by what may be term ed the method of the “minimal effective stimulus.” Through the partition separating two dark rooms from each other a hole was drilled 1 mm. across; this was covered with a piece of ground glass.
openaire   +2 more sources

Overview of Gaia Multi-Color Photometry

open access: yesOpen Astronomy, 2003
Gaia will obtain multi-color photometry for astrometric and astrophysical purposes. A photometry in five broad bands and with high angular resolution will be obtained after every astrometric observation of a star, especially for the sake of correcting ...
Høg Erik
doaj   +1 more source

Photometrie [PDF]

open access: yesZeitschrift für Analytische Chemie, 1880
n ...
Gouy, M., Töpler, A., Eder, J. M.
openaire   +2 more sources

Optical Properties of Light-Scattering Standards for CCD Photometry

open access: yesSensors, 2023
This paper analyzes the light-scattering standards currently used for calibration (verification) and systematic research in photo and spectrophotometry tools.
Denys Bondariev   +4 more
doaj   +1 more source

Sobre a Dosagem Fotométrica do Cobre em Águas

open access: yesBrazilian Archives of Biology and Technology, 2001
The author presents an analytic process for copper quantitative determination in mineral and potable waters, based in the reaction of the cation copper with sodium diethyl-dithio carbamate. Due to the presence of certain elements common in water, such as
Reinaldo Spitzner
doaj   +1 more source

The level of photometry is the basic level of the Hungarian galaxy [PDF]

open access: yesمجلة التربية والعلم, 2007
The photometric and fundamental plane for a sample of early type galaxies(elliptical and lenticular galaxies) which belongs to Virgo cluster have been calculated by fitting the Sersic model ( r1/n-model) to the surface brightness profiles along the major
Mohsen Ali, Saad Younis
doaj   +1 more source

NORAD TLE Type Orbit Determination of LEO Satellites Using GPS Navigation Solutions [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2002
NORAD Two Line Elements (TLE) are widely used for the increasing number of small satellite mission operations and analysis. However, due to the irregular periodicity of generation of the NORAD TLE, a new TLE that is independent of NORAD is required.
Chang-Hwa Cho   +4 more
doaj   +1 more source

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