thin polymer films, soft x-ray, polymer support, solar filter


This paper discusses soft x-ray filter designs for the Brigham Young University "Goldhelox Project". Three polymers intended for use as a supportive substrate for a soft x-ray solar filter, having a passband centered at 171 angstroms are examined. The use of polymer substrates is examined because of vibrational and mechanical stresses associated with the shuttle launch, preventing the use of a free standing filter, and because of Goldhelox's special need to locate the filter near the imaging plane. The uniform consistency of a polymer support will prevent any imaging of the filter support structure, as would occur if a traditional mesh support was used. The polymer substrates investigated are: AP-1, Formvar, and polypropylene. Their transmissive characteristics of the polymers are examined along with the feasibility of their use. Transmission as a function of energy for each polymer is given over an energy range of 10 to 180 eV.

Original Publication Citation

Memorie Williams, Evan Hansen, A. Reyes-Mena, and David D. Allred, "The Transmittance of Thin Polymer Films and their Suitability as a Support Substrate for a Soft X-ray Telescope," EUV, X Ray, and Gamma Ray Instrumentation for Astronomy II, Proceedings of SPIE 1549, 147 154 (1991).

Document Type

Peer-Reviewed Article

Publication Date


Permanent URL


Society of Photo Optical Instrumentation Engineers (SPIE)




Physical and Mathematical Sciences


Physics and Astronomy