Results 1 to 10 of about 58,978 (118)

Linking solar minimum, space weather, and night sky brightness [PDF]

open access: yesScientific Reports, 2021
This paper presents time-series observations and analysis of broadband night sky airglow intensity 4 September 2018 through 30 April 2020. Data were obtained at 5 sites spanning more than 8500 km during the historically deep minimum of Solar Cycle 24 ...
Albert D. Grauer, Patricia A. Grauer
doaj   +2 more sources

UBVRI night sky brightness at Kottamia Astronomical Observatory [PDF]

open access: yesScientific Reports, 2023
Photoelectric observations of night sky brightness (NSB) at different zenith distances and azimuths, covering all the sky, at the Egyptian Kottamia Astronomical observatory (KAO) site of coordinates ϕ = 29° 55.9′ N and λ = 31° 49.5′ E, were done using a ...
Mohamed F. Aboushelib   +4 more
doaj   +2 more sources

SG-WAS: A New Wireless Autonomous Night Sky Brightness Sensor [PDF]

open access: yesSensors, 2021
The main features of SG-WAS (SkyGlow Wireless Autonomous Sensor), a low-cost device for measuring Night Sky Brightness (NSB), are presented. SG-WAS is based on the TSL237 sensor –like the Unihedron Sky Quality Meter (SQM) or the STARS4ALL Telescope ...
Miguel R. Alarcon   +5 more
doaj   +2 more sources

Astrotourism and Night Sky Brightness Forecast: First Probabilistic Model Approach [PDF]

open access: yesSensors, 2019
Celestial tourism, also known as astrotourism, astronomical tourism or, less frequently, star tourism, refers to people’s interest in visiting places where celestial phenomena can be clearly observed.
Eleazar C-Sánchez   +3 more
doaj   +2 more sources

Stability of the Nine Sky Quality Meters in the Dutch Night Sky Brightness Monitoring Network [PDF]

open access: yesSensors, 2015
In the context of monitoring abundance of artificial light at night, the year-to-year stability of Sky Quality Meters (SQMs) is investigated by analysing intercalibrations derived from two measurement campaigns that were held in 2011 and 2012.
Peter den Outer   +5 more
doaj   +2 more sources

Absolute Radiometric Calibration of TESS-W and SQM Night Sky Brightness Sensors [PDF]

open access: yesSensors, 2019
We develop a general optical model and describe the absolute radiometric calibration of the readings provided by two widely-used night sky brightness sensors based on irradiance-to-frequency conversion.
Salvador Bará   +2 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]

open access: yesJournal 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

Let there be Skyglow—light pollution from a large outdoor music festival (Lollapalooza Berlin 2016) [PDF]

open access: yesScientific Reports
Live music is often linked to elaborate light shows, particularly at large outdoor music festivals. However, artificial light at night is one form of environmental pollution, light pollution, and because outdoor festivals emit a substantial amount of ...
Andreas Jechow
doaj   +2 more sources

Artificial light at night correlates with seabird groundings: mapping city lights near a seabird breeding hotspot [PDF]

open access: yesPeerJ, 2022
Artificial light at night (ALAN) is a growing conservation concern for seabirds, which can become disoriented and grounded by lights from buildings, bridges and boats. Many fledgling seabirds, especially Procellariiformes such as petrels and shearwaters,
Ariel-Micaiah Heswall   +6 more
doaj   +2 more sources

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