21 August 2009 Toroidal variable-line-space gratings: the good, the bad, and the ugly
Author Affiliations +
Abstract
Toroidal variable-line-space (VLS) gratings are very important in the design of an efficient VUV solar telescope that will measure the CIV (155nm) and MgII (280nm) emissions lines in the Sun's transition region. In 1983 Kita and Harada described spherical VLS gratings but the technology to commercially fabricate these devices is a recent development, especially for toroidal surfaces. This paper will describe why this technology is important in the development of the Solar Ultraviolet Magnetograph Investigation (SUMI) sounding rocket program (the good), the delays due to the conversion between the TVLS grating design and the optical fabrication (the bad), and finally the optical testing, alignment and tolerancing of the gratings (the ugly).
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Edward West, Ken Kobayashi, Jonathan Cirtain, Allen Gary, John Davis, Joseph Reader, "Toroidal variable-line-space gratings: the good, the bad, and the ugly", Proc. SPIE 7433, Optical System Alignment, Tolerancing, and Verification III, 74330I (21 August 2009); doi: 10.1117/12.825709; https://doi.org/10.1117/12.825709
PROCEEDINGS
12 PAGES


SHARE
RELATED CONTENT

NLST: the Indian National Large Solar Telescope
Proceedings of SPIE (July 28 2010)
Grazing Incidence Solar Telescope
Proceedings of SPIE (April 03 1981)
A large aperture portable telescope
Proceedings of SPIE (September 22 2011)
Statistical truths of tolerance assignment in optical design
Proceedings of SPIE (September 12 2011)

Back to Top