Publication:
Absolute radiometric calibration of TESS-W and SQM night sky brightness sensors

Loading...
Thumbnail Image
Full text at PDC
Publication Date
2019-03-17
Authors
BarĂ¡, Salvador
Tapia Ayuga, Carlos Eugenio
Advisors (or tutors)
Editors
Journal Title
Journal ISSN
Volume Title
Publisher
MDPI AG
Citations
Google Scholar
Research Projects
Organizational Units
Journal Issue
Abstract
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. The calibration involves the precise determination of the overall spectral sensitivity of the devices and also the constant G relating the output frequency of the light-to-frequency converter chip to the actual band-weighted and field-of-view averaged spectral radiance incident on the detector (brightness). From these parameters, we show how to define a rigorous astronomical absolute photometric system in which the sensor measurements can be reported in units of magnitudes per square arcsecond with precise physical meaning.
Description
© 2019 by the authors. This work was partially supported by Xunta de Galicia/FEDER, grant ED431B 2017/64 (SB), and partly developed within the framework of the Spanish Network for Light Pollution Studies, REECL (AYA2015-71542-REDT). CET and JZ acknowledge funding by the Spanish MICINN AYA2016-75808-R, by the Madrid Regional Government through the TEC2SPACE-CM Project (P2018/NMT-4291), and by STARS4ALL, a project funded by the European Union H2020-ICT-2015-688135.
Keywords
Citation
Collections