ECSS-Q-ST-70-09C – Measurements of thermo-optical properties of thermal control materials (31 July 2008)

This Standard cancels and replaces ECSS-Q-70-09A (29 August 2003).



This Standard describes the methodology, instruments, equipment and samples, used to calculate the thermo-optical properties of thermal-control materials.


The following test methods are detailed in this Standard including the configuration of samples and calculations:

  • Solar absorptance using spectrometer (as) – (see Annex C.2).

  • Comparative test method (ap)(see Annex C.3).

  • Infrared emittance using thermal test method (eh) – (see Annex C.4).

  • Infrared emittance using IR spectrometer (eh) – (see Annex C.5).

  • Infrared emittance using portable equipment (en) – (see Annex C.6).


This standard may be tailored for the specific characteristics and constraints of a space project in conformance with ECSS-S-ST-00.



Md5 checksum .doc file = 3DF380453E4AAEF07224B2FB8BC7F21A
Md5 checksum .pdf file = EF84978AEE883927BCDB58FB06F9A205