Extreme Ultraviolet Explorer: Mirror Optical Tests And Results

Calvin H. Gillespie; David F. Edwards; Michael A. Nichols; David S. Finley

doi:10.1117/12.964373

21 October 1986 Extreme Ultraviolet Explorer: Mirror Optical Tests And Results

Calvin H. Gillespie, David F. Edwards, Michael A. Nichols, David S. Finley

Proceedings Volume 0640, Grazing Incidence Optics; (1986) https://doi.org/10.1117/12.964373
Event: 1986 Technical Symposium Southeast, 1986, Orlando, United States

Abstract

The optical tests described here were performed after each step in the fabrication process of three Extreme Ultraviolet Explorer (EUVE) Type 1 telescope mirrors. The surface finish and irregularity was determined by image analysis and the geometrical figure was tested interferometrically. Images of a collimated point source were relayed to obtain magnifications and photographic exposures were adjusted to include all the scattered light while still resolving the smallest bright image core. By linearizing film sensitivity and taking digitized lineouts of the photographed image, less than 1 arc second full width half maximum (FWHM) intensities were measured. The integrated energy density was measured photometrically, and diffraction limited curves of 5 arc second half energy widths (HEW) were obtained. The test purpose, instruments employed, alignment methods, and test results are detailed.

Citation Download Citation

Calvin H. Gillespie, David F. Edwards, Michael A. Nichols, and David S. Finley "Extreme Ultraviolet Explorer: Mirror Optical Tests And Results", Proc. SPIE 0640, Grazing Incidence Optics, (21 October 1986); https://doi.org/10.1117/12.964373

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