Title :
Terahertz calorimetry for the Herschel Space Observatory
Author :
Klaassen, T.O. ; Hovenier, J.N. ; Adam, A.J.L. ; Fischer, J. ; Jakob, G. ; Poglitsch, A. ; Redlich, B.
Author_Institution :
Kavli Inst. of Nanosci. Delft, Delft Univ. of Technol., Netherlands
fDate :
27 Sept.-1 Oct. 2004
Abstract :
Terahertz laser calorimetry has been employed to measure the emissivity of samples of the Herschel telescope mirror at T=77 K, and the absorptivity of absorbers meant for the PACS and HIFI instruments at T=10 K. As a spin-off, a simple broadband absolute power meter has been developed.
Keywords :
astronomical instruments; astronomical techniques; calorimetry; emissivity; mirrors; power meters; 10 K; 77 K; HIFI instruments; Herschel Space Observatory; Herschel telescope mirror; PACS; broadband absolute power meter; emissivity measurement; photoconductor array camera and spectrometer; terahertz laser calorimetry; Aerospace materials; Coatings; Instruments; Observatories; Optical sensors; Optical surface waves; Picture archiving and communication systems; Resistance heating; Telescopes; Temperature sensors;
Conference_Titel :
Infrared and Millimeter Waves, 2004 and 12th International Conference on Terahertz Electronics, 2004. Conference Digest of the 2004 Joint 29th International Conference on
Print_ISBN :
0-7803-8490-3
DOI :
10.1109/ICIMW.2004.1422344
