This document discusses models for analyzing artificial sky brightness. It begins by defining sky brightness and noting that it is highly variable due to changing atmospheric conditions and light emissions. It then outlines several models for predicting night sky brightness, including two-stream approximation and iterative radiative transfer equation approaches. The document also discusses using analysis models to enable prediction and lists challenges for the future, such as extending measurement networks, using multispectral satellites, agreeing on common descriptors, developing parametric models, and issuing recommendations.
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Análisis del brillo artificial del cielo mediante modelos
1. Salva Bará
salva.bara@usc.es
Área de Óptica, Dept. Física Aplicada. Facultade de Óptica e Optometría
Universidade de Santiago de Compostela. Galicia.
http://webspersoais.usc.es/persoais/salva.bara/
Models for the analysis of
artificial sky brightness
2. DISCLAIMER
This presentation is intended for
educational, non-commercial use.
Trademarks, models and publications are
quoted here merely for informative
purposes, without any explicit or implicit
endorsement by the Universidade de
Santiago de Compostela (USC).
(c) Images may have external copyright.
3. 1. "Sky brightness": what is it?
2. A highly variable magnitude
3. Modeling the night sky brightness
4. Challenges for the next years
20. A. Models for predicting the NSB
• Two-stream approximation
• Iterative approach to Radiative Transfer
Equation (RTE)
• Successive Orders of Scattering
38. 4. Challenges for the next years
• Extending the measurement networks
• Multispectral satellite platforms
• Agreeing common NSB descriptors
39. 4. Challenges for the next years
• Extending the measurement networks
• Multispectral satellite platforms
• Agreeing common NSB descriptors
• Developing parametric NSB models
40. 4. Challenges for the next years
• Extending the measurement networks
• Multispectral satellite platforms
• Agreeing common NSB descriptors
• Developing parametric NSB models
• Issuing recommendations and ordinances