Performance comparison of two Wolter type II telescopes in the far ultraviolet

Details Performance comparison of two Wolter type II telescopes in the far ultraviolet Performance comparison of two Wolter type II telescopes in the far ultraviolet

Oct 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995apopt..34.6459l&link_type=abstract

Applied Optics, Volume 34, Issue 28, October 1, 1995, pp.6459-6464

Physics

Optics

1

Telescopes, Optical Testing, Image Quality, Ultraviolet: Far, Sun, Space Optics

Scientific paper

Experimental results for image quality and scatter in far-UV light are used to choose between the conventionally polished Solar Extreme-Ultraviolet Rocket Telescope and Spectrograph (SERTS-A) and computer-controlled polished SERTS-C Wolter type II solar rocket telescopes for an extreme-UV flight instrument. In 124-nm light the SERTS-C telescope image had a 0.67-arcsec full width at half-maximum (FWHM), compared with a 1.25-arcsec FWHM for the SERTS-A telescope. In addition SERTS-C had twice the peak irradiance of SERTS-A and an order of magnitude lower near-angle scatter. The inflight performance of the telescopes is consistent with laboratory findings.

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