Solar blind pyrometry not relying on atmospheric absorption bands Marzo Rosa, Aitor Ballestrín, Jesús Barbero, Javier Cañadas, Inmaculada Rodríguez, José Concentrated solar radiation Solar-blind detector IR camera Financial support by the SFERA-II Project (Grant Agreement No. 312643, work package 11 Pyrometric Temperature Measurement Methods for High-Concentration Solar Facilities and Solar Simulators) from the Research Infrastructures Activity in the 7th Framework Programme of the European Union is gratefully acknowledged <http://sfera2.sollab.eu>. Also, the main author acknowledges the financial support provided by the Education Ministry of Chile Grant PMI ANT 1201. Infrared measurement of the thermal radiation emitted by solar irradiated material surfaces is the most reliable alternative to contact thermometry which is inadequate for measuring surface temperatures. However, reflected solar radiation and the use of windows for material testing in controlled atmosphere or vacuum, can be important sources of error in this non-contact methodology. A promising method for eliminating this solar perturbation is by using centered band-pass filters on the spectral bands where the solar radiation has been attenuated. Two wavelength bands are analyzed in this paper. An IR camera prototype with band-pass filters centered at these two wavelength bands and an analysis of its behavior are presented. 2026-01-13T08:14:53Z 2026-01-13T08:14:53Z 2014 journal article Marzo, A., Ballestrín, J., Barbero, J., Cañadas, I. and Rodríguez, J. (2014) Solar Blind Pyrometry Not Relying on Atmospheric Absorption Bands. Solar Energy 09/2014, 107:415–422, doi: https://doi.org/10.1016/j.solener.2014.04.031 0038-092X 1471-1257 https://hdl.handle.net/10481/109585 10.1016/j.solener.2014.04.031 eng http://creativecommons.org/licenses/by-nc-nd/4.0/ open access Attribution-NonCommercial-NoDerivatives 4.0 Internacional Elsevier