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Applied Optics

Applied Optics


  • Vol. 43, Iss. 24 — Aug. 20, 2004
  • pp: 4633–4642

Imaging spectrograph for interstellar shocks: a narrowband imaging payload for the far ultraviolet

Matthew Beasley, Catherine Boone, Nathaniel Cunningham, James Green, and Erik Wilkinson  »View Author Affiliations

Applied Optics, Vol. 43, Issue 24, pp. 4633-4642 (2004)

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We present an imaging spectrometer developed for narrowband imaging at 1035 Å with high (∼1-arc sec) spatial resolution over a modest field of view (∼5 arc min). The instrument is based on a conventional Gregorian telescope with aberration-corrected holographic rulings on the secondary optic. These aberration-correcting rulings enable stigmatic imaging in diffracted light with a minimum number of optical elements, thereby maintaining a high system efficiency. The capabilities of this instrument allow us to map the distribution of UV-emitting material in the hot (∼300,000 K) plasma from shocks in supernova remnants. Although this design is optimized for imaging near 1035 Å, the basic concept can be applied to provide narrowband imaging or long-slit imaging spectroscopy at any wavelength. In addition, a larger field of view is possible with a corresponding loss in spatial resolution.

© 2004 Optical Society of America

OCIS Codes
(050.1970) Diffraction and gratings : Diffractive optics
(090.1000) Holography : Aberration compensation
(300.6540) Spectroscopy : Spectroscopy, ultraviolet

Original Manuscript: November 10, 2003
Revised Manuscript: May 17, 2004
Published: August 20, 2004

Matthew Beasley, Catherine Boone, Nathaniel Cunningham, James Green, and Erik Wilkinson, "Imaging spectrograph for interstellar shocks: a narrowband imaging payload for the far ultraviolet," Appl. Opt. 43, 4633-4642 (2004)

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