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Colour remote sensing of the impact of artificial light at night (II): Calibration of DSLR-based images from the International Space Station

descriptionPublicationkeyboard_double_arrow_right Article , Preprint 01 Oct 2021Embargo end date: 01 Jan 2021 Spain English Publisher:Elsevier BVJournal:Remote Sensing of Environment, volume 264, page 112,611 (issn: 0034-4257,

Authors: Donald R. Pettit; Francisco Ocaña; Kevin J. Gaston; Jonathan Bennie; Jesús Gallego; William L. Stefanov; Alejandro Sánchez de Miguel; +2 Authors

doi: 10.1016/j.rse.2021.112611 , 10.48550/arxiv.2108.07050

arXiv: http://arxiv.org/abs/2108.07050

handle: 20.500.14352/4535 , 10261/255326

Colour remote sensing of the impact of artificial light at night (II): Calibration of DSLR-based images from the International Space Station

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Abstract

Nighttime images taken with DSLR cameras from the International Space Station (ISS) can provide valuable information on the spatial and temporal variation of artificial nighttime lighting on Earth. In particular, this is the only source of historical and current visible multispectral data across the world (DMSP/OLS and SNPP/VIIRS-DNB data are panchromatic and multispectral in the infrared but not at visible wavelengths). The ISS images require substantial processing and proper calibration to exploit intensities and ratios from the RGB channels. Here we describe the different calibration steps, addressing in turn Decodification, Linearity correction (ISO dependent), Flat field/Vignetting, Spectral characterization of the channels, Astrometric calibration/georeferencing, Photometric calibration (stars)/Radiometric correction (settings correction - by exposure time, ISO, lens transmittance, etc) and Transmittance correction (window transmittance, atmospheric correction). We provide an example of the application of this processing method to an image of Spain.

Country

Spain

Related Organizations

National Aeronautics and Space Administration
United States
Instituto de Astrofísica de Andalucía
Spain
Complutense University of Madrid
Spain
University of Exeter
United Kingdom
European Space Astronomy Centre
Spain

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Keywords

System, Physics - Instrumentation and Detectors, Evolution, FOS: Physical sciences, Artificial lighting, Applied Physics (physics.app-ph), Brightness, Urban, Instrumentation and Methods for Astrophysics (astro-ph.IM), Sensor, 52, Night, Física atmosférica, Definition, 2501 Ciencias de la Atmósfera, Physics - Applied Physics, Instrumentation and Detectors (physics.ins-det), Remote sensing, Pollution, Light pollution, Sky, Astrophysics - Instrumentation and Methods for Astrophysics, Physics - Optics, Optics (physics.optics)

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