Results 1 to 10 of about 91,440 (121)
Temperature Stability of the Sky Quality Meter [PDF]
Sensors, 2013 The stability of radiance measurements taken by the Sky Quality Meter (SQM)was tested under rapidly changing temperature conditions during exposure to a stable lightfield in the laboratory.
Christopher C.M. Kyba +4 more
doaj +6 more sources
Verification of Angular Response of Sky Quality Meter with Quasi-Punctual Light Sources [PDF]
Sensors, 2021 Sky Quality Meter (SQM) is a commercial instrument based on photometers widely used by amateur astronomers for skyglow measurement from the ground. In the framework of the MINLU project, two SQM-LE units were integrated in an autonomous sensor suite ...
Mirco Bartolomei +4 more
doaj +2 more sources
Light brightness data near sea turtle nests as measured from the horizon and zenith using a Sky Quality Meter [PDF]
Data in Brief, 2022 A Sky Quality Meter (SQM) is a photometer designed to measure night sky brightness. SQMs have been used to interpret light fields for various purposes, including studies of relationships between directional light brightness and sea turtle hatchling ...
Shigetomo Hirama +4 more
doaj +2 more sources
Measurements of Night Sky Brightness in the Veneto Region of Italy: Sky Quality Meter Network Results and Differential Photometry by Digital Single Lens Reflex [PDF]
Journal of Imaging, 2019 In this paper, we present the implementation of a monitoring network for artificial light at night (ALAN), based on Sky Quality Meter devices (SQM) installed in seven locations of the Veneto region. The system is coordinated by the Regional Environmental
Andrea Bertolo +3 more
doaj +2 more sources
High-resolution datasets for urban heat vulnerability assessment in urbanized areas of the Netherlands4TU.ResearchData [PDF]
Data in BriefThe urban heat island effect is increasingly affecting the quality of life in cities, and detailed data is crucial in designing mitigation policies. However, weather stations are predominantly situated outside urban environments, limiting their ability ...
Maha M. Habib +3 more
doaj +2 more sources
SQM Ageing and Atmospheric Conditions: How Do They Affect the Long-Term Trend of Night Sky Brightness Measurements? [PDF]
SensorsThe most widely used radiance sensor for monitoring Night Sky Brightness (NSB) is the Sky Quality Meter (SQM), making its measurement stability fundamental.
Pietro Fiorentin +5 more
doaj +2 more sources
Alteration of twilight sky brightness profile by light pollution [PDF]
Scientific ReportsThe phenomenon of twilight has been stipulated as naturally dependent on the variables of solar depression, aerosol concentration and ozone composition.
Muhamad Syazwan Faid +6 more
doaj +2 more sources
Jurnal Kumparan Fisika, 2021 ABSTRAK Dalam penelitian ini akan diukur tingkat kecerahan langit untuk mengetahui waktu hilangnya syafaq ( cahaya merah ) yang ada dilangit pada waktu malam hari.
M. Asep Rizkiawan +2 more
doaj +3 more sources
Jurnal Kumparan Fisika, 2020 Polusi cahaya sangat berpengaruh terhadap kecerahan langit. Tingkat kecerahan langit dapat diukur dengan Sky Quality Meter (SQM). Hasil data SQM sangat banyak, perlu aplikasi untuk mempermudah pengolahan datanya. Fitur Visual Basic Microsoft Excel dapat
Mustofa Ahyar +2 more
doaj +3 more sources
Remote Sensing, 2022 There are several tools and methods to quantify light pollution due to direct or reflected light emitted towards the sky. Unmanned aerial vehicles (UAV) are still rarely used in light pollution studies.
Luciano Massetti +2 more
doaj +1 more source