A5084069027- Impact of Light on Environment and Health
- Atmospheric Ozone and Climate
- Optical Wireless Communication Technologies
- Remote Sensing in Agriculture
- Astrophysics and Cosmic Phenomena
- Urban Heat Island Mitigation
- Adaptive optics and wavefront sensing
- Gamma-ray bursts and supernovae
- Particle Detector Development and Performance
- Building materials and conservation
- Calibration and Measurement Techniques
- Atmospheric aerosols and clouds
- Infrared Target Detection Methodologies
- Dark Matter and Cosmic Phenomena
- Atmospheric and Environmental Gas Dynamics
- Atmospheric chemistry and aerosols
- Astronomical Observations and Instrumentation
- Climate change and permafrost
- Conservation Techniques and Studies
- Particle Accelerators and Free-Electron Lasers
- Astronomy and Astrophysical Research
- Radiation Therapy and Dosimetry
- Radio Astronomy Observations and Technology
- Photocathodes and Microchannel Plates
- Advanced optical system design
Norwegian University of Science and Technology
2022-2025
Osservatorio Astronomico di Padova
2010-2025
University of Padua
2011-2025
National Institute for Astrophysics
2020
Argonne National Laboratory
2013
Osservatorio astronomico di Bologna
2011
Ground-based gamma-ray astronomy has had a major breakthrough with the impressive results obtained using systems of imaging atmospheric Cherenkov telescopes. huge potential in astrophysics, particle physics and cosmology. CTA is an international initiative to build next generation instrument, factor 5-10 improvement sensitivity 100 GeV 10 TeV range extension energies well below above TeV. will consist two arrays (one north, one south) for full sky coverage be operated as open observatory....
The most widely used radiance sensor for monitoring Night Sky Brightness (NSB) is the Quality Meter (SQM), making its measurement stability fundamental. A method using Sun as a calibrator was applied to analyse quality of measures recorded in Veneto Region (Italy) and at La Silla (Chile). analysis mainly revealed tendency toward reductions measured NSB due both instrument ageing atmospheric variations. This work compared component instrumental with contribution conditions. spectral...
Abstract The spatial and angular emission patterns of artificial natural light emitted, scattered, reflected from the Earth at night are far more complex than those for scattered solar radiation during daytime. In this commentary, we use examples to show that there is additional information contained in distribution emitted light. We argue could be used improve existing remote sensing retrievals based on lights, some cases make entirely new analyses possible. This work will challenging, so...
ABSTRACT The analysis of night cloud cover is very important for astronomical observations in real time, considering a typical observation time about 15 minutes, and to provide statistics. In this article, we use the Sky Quality Meter (SQM) high-resolution temporal La Silla Asiago (Ekar Observatory) sky: 3 5 minutes respectively. We investigate annual evolution natural contributions sky at site not influenced by artificial light (ALAN) one highly influenced. also make correlation between...
Urban heat island (UHI) mitigation and adaptation are urgent needs in a built environment, which requires us to search for sustainable solutions limit the urban effect improve energy efficiency of building envelopes. Among these solutions, vertical green structures (VGSs) have recently attracted significant attention their potential mitigate adverse effects, especially densely areas. This study presents comprehensive data analysis microclimate living wall Milan, Italy. Our aim was evaluate...
The Moderate Resolution Imaging Spectroradiometer (MODIS) instrument aboard Terra and Aqua satellites provides measurements of several atmospheric parameters.This paper focuses on the cloud fraction data representing number cloudy pixels divided by total pixels, available through 1° x grids spatial resolution with daily or monthly temporal resolution. aim study is to propose a novel method called Spatial-Temporal Implementation Algorithm (STIA) for analysing satellite 1°grid average values...
ABSTRACT The study of artificial light at night (ALAN) by satellite is very important for the analysis new astronomical sites and long-term temporal evolution observation emission from ground. data presents many advantages but also some critical points because fluctuations in measurements. main result this paper discovery a correlation between these aerosol concentration combined with cloud cover lunar cycles. In work, we present mathematical empirical model pollution propagation relation to...
In this paper, we analyse three sites of great astronomical importance: Mt Graham, Paranal and La Silla. recent years, with the development new telescopes, study cloud cover is getting more important for selection as well existing telescopes. At moment there discussion on techniques used to climatic conditions. We have mainly two large data sets: satellite ground data. The sets advantages disadvantages. in detail various available compare these correlations between them. particular, focus...
The presence of artificial light at night is not only limiting astronomical observations but has been linked to negative effects on human health and behavior wildlife. New measurement systems are therefore needed monitor emissions their time evolution; MINLU autonomous payload designed tested University Padova provide complete aerial sources over extended areas, with the capability be integrated either stratospheric balloons or drones. implemented architecture based commercial components...
The Stave Churches (SCs) are one of the most iconic heritages in Norway, and only 28 medieval SCs have survived till our age this country. They built on wood with staves wooden sleepers standing off ground foundation stones which primary purpose guaranteeing structural support, ensuring integrity leveled foundation, avoid water or rainwater penetration up to valuable structures. This paper aims analyze risk Freeze-Thaw (F-T) decay using an algorithm a single climate input parameter i.e.,...
Comparing the number of clear nights (cloud free) available for astronomical observations is a critical task because it should be based on homogeneous methodologies. Current data are mainly different judgements observer logbooks or instruments. In this paper we present new methodology very sites modern optical astronomy, in order to quantify night time fraction. The extracted from GOES12 satellite infrared images and compared with ground conditions when available. analysis introduce wider...
In this article, we describe a new algorithm for short-time satellite-based forecasts seeing and photometric quality at the European Extremely Large Telescope (E-ELT) site (Armazones) analyse correlation between Paranal Armazones sites. The uses data from polar satellite Aqua's Moderate Resolution Imaging Spectroradiometer (MODIS) Geostationary Operational Environmental Satellite (GOES 13). We have analysed 13 years (2003–2015) of cloud coverage MODIS in order to obtain cyclical...
The use of RGB cameras in photometric applications has grown over the last few decades many fields such as industrial applications, light engineering and analysis quality night sky. In this field, they are often used conjunction with a Sky Quality Meter (SQM), an instrument for measurement sky brightness (NSB), mainly when there is significant amount artificial at (ALAN). performances these two instruments compared here. A simple source composed nine narrowband LEDs integrating sphere was to...
We present, for the first time, a new method to estimate seeing using remote sounding from infrared night-time data of Geostationary Operational Environmental Satellite 12. discuss correlation found between ground-based and satellite-derived values analysis sites located at Cerro Paranal (Chile) Roque de los Muchachos (Canary Islands, Spain). obtain ground–satellite percentage about 90 per cent. Finally, by studying afternoon following night, we are able provide forecast photometric night quality.
Earth and Space Science Open Archive This preprint has been submitted to is under consideration at Journal of Geophysical Research - Atmospheres. ESSOAr a venue for early communication or feedback before peer review. Data may be preliminary.Learn more about preprints preprintOpen AccessYou are viewing the latest version by default [v1]The benefit multiple angle observations visible band remote sensing using night lightsAuthorsChristopher C....
A very wide-used instrument for the measurement of Night Sky Brightness (NSB) is Quality Meter (SQM). One its important issues tracking NSB long time and connecting variations to changes in outdoor lighting. The stability these radiometers fundamental; variation on behaviour could be confused with sky brightness. SQMs network Veneto Region (Italy) SQM installed at La Silla (Chile) are analysed by using twilight method considering both sunset dawn measurements, which allows compensate shifts...
In this paper we calculate the delay of arrival times visible photons on focal plane a telescope and its fluctuations as function local atmospheric conditions (temperature, pressure, chemical composition, seeing values) diameter. The aim is to provide model for delay-time accurate picosecond level, required by several very high time resolution astrophysical applications, such comparison radio optical data giant bursts from pulsars, Hanbury Brown Twiss Intensity Interferometry with Cerenkov...
In this paper we have evaluated the amount of available telescope time at four interesting sites for astronomical instrumentation. We use GOES 12 data years 2008 and 2009. a homogeneous methodology presented in several previous papers to classify nights as clear (completely cloud-free), mixed (partially cloud-covered), covered. Additionally, nights, satellite stable which correspond ground based photometric corresponding spectroscopic nights. applied model two Northern Hemisphere (San Pedro...
Sky Quality Meter (SQM) is a commercial instrument based on photometers widely used by amateur astronomers for skyglow measurement from the ground. In framework of MINLU project, two SQM-LE units were integrated in an autonomous sensor suite realized and tested at University Padova monitoring light pollution drones or sounding balloons. During ground tests campaign before airborne measurement, performance both SQM was verified laboratory using controlled sources as reference input; results...
ABSTRACT The propagation of light radiation in the atmosphere is a topic that needs to be properly analysed mitigate its negative influence on astronomical observations. This work describes novel approach for evaluating atmospheric artificial at night (ALAN), emphasizing dependence altitude and aerosols. It based an innovative experiment using sounding balloon equipped with two sky-quality meters (SQM): one vertically pointed 30° (SQM-V) other horizontally 90° (SQM-H) from zenith. system was...
Abstract ANAtOLIA (Atmospheric monitoring to Assess the availability of Optical Links through Atmosphere) is a European Space Agency project aimed at selecting sites for optical communication in atmosphere. The main monitored parameters are cloud cover, aerosol relation atmospheric turbulence and forecasting influence cover reducing atmosphere selected by ESA. In this work, novel algorithm that uses both Pearson correlation coefficient Fourier analysis used assess such influences. Aerosol...
In this paper we investigate the correlation between atmospheric perturbations at Paranal Observatory and Chilean coast tides, which are mostly modulated by 14-day syzygy solar-lunar tidal cycle. To aim, downloaded 15 years (2003-2017) of cloud coverage data from AQUA satellite, in a matrix that includes also Armazones, site European Extremely Large Telescope. By applying Fast Fourier Transform to these detected periodicity peak about 14 days. We studied tide cycle Chanaral De Las Animas, on...
The seeing calculation and its evolution during the night is a key point for operation of telescopes adaptive optics systems. Currently, there are various instruments able to measure seeing, example, DIMM (differential image motion monitor) MASS (multi aperture scintillation sensor). This paper describes new tool local ground layer measurement. In particular, we want derive Fried parameter r0 through laser beam horizontal propagation. method experimental study low-altitude atmospheric...