Fused Silica Mirror Evaluation For The Shuttle Infrared Telescope Facility (SIRTF)

William P. Barnes Jr.; Ramsey K. Melugin

doi:10.1117/12.937978

3 November 1983 Fused Silica Mirror Evaluation For The Shuttle Infrared Telescope Facility (SIRTF)

William P. Barnes Jr., Ramsey K. Melugin

Proceedings Volume 0444, Advanced Technology Optical Telescopes II; (1983) https://doi.org/10.1117/12.937978
Event: 1983 Astronomy Conferences, 1983, London, United Kingdom

Abstract

The SIRTF optics are intended for operation around 10°K. Construction and evaluation of the telescope assembly at room temperature would be most convenient, but require that optical performance changes (other than focal shifts) on cooling remain within the assigned system tolerances. "Diffraction limited" performance for 2-μm radiation is a desirable goal for SIRTF. With support from the Space Technology Branch, Space Science Division, NASA Ames Research Center, Itek Optical Systems has completed measurements of the optical figure of a 0.65-meter, lightweight, fused silica mirror at temperatures in the 13 to 17°K range. Test requirements and preparations were reviewed at the 26th Symposium. Test results, and our evaluation of their significance are presented here.

Citation Download Citation

William P. Barnes Jr. and Ramsey K. Melugin "Fused Silica Mirror Evaluation For The Shuttle Infrared Telescope Facility (SIRTF)", Proc. SPIE 0444, Advanced Technology Optical Telescopes II, (3 November 1983); https://doi.org/10.1117/12.937978

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