Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976a%26a....49..467w&link_type=abstract
Astronomy and Astrophysics, vol. 49, no. 3, June 1976, p. 467-469.
Astronomy and Astrophysics
Astronomy
1
Astronomical Photometry, Far Infrared Radiation, Infrared Astronomy, Infrared Filters, Transmission Efficiency, Light Scattering, Radiative Transfer, Room Temperature, Temperature Effects, Thermoplasticity
Scientific paper
A transmission filter for far-IR photometry in a spectral band at 30 microns is described. This filter consists of layers of inductive meshes embedded in a thermoplastic mixed with MgF2 and PbC12 powders. It is noted that the peak transmission is 50% and that the transmission profile remains practically unchanged between room temperature and 4 K. Radiation leaks in the spectral range from 2.5 to 25 microns are estimated to be less than 0.1%.
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