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Título:
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Absolute radiometric calibration of TESS-W and SQM night sky brightness sensors
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Autores:
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Bará, Salvador ;
Tapia Ayuga, Carlos Eugenio ;
Zamorano Calvo, Jaime
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Tipo de documento:
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texto impreso
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Editorial:
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MDPI AG, 2019-03-17
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Dimensiones:
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application/pdf
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Nota general:
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cc_by
info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Física atmosférica
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Tipo = Artículo
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Resumen:
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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.
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En línea:
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https://eprints.ucm.es/id/eprint/55635/1/zamorano140libre%2BCC.pdf
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