Stigmatic grazing-incidence x-ray spectrograph for solar coronal observations

Ken Kobayashi; Jonathan Cirtain; Leon Golub; Kelly Korreck; Peter Cheimets; Edward Hertz; David Caldwell

doi:10.1117/12.856793

29 July 2010 Stigmatic grazing-incidence x-ray spectrograph for solar coronal observations

Ken Kobayashi, Jonathan Cirtain, Leon Golub, Kelly Korreck, Peter Cheimets, Edward Hertz, David Caldwell

Proceedings Volume 7732, Space Telescopes and Instrumentation 2010: Ultraviolet to Gamma Ray; 773233 (2010) https://doi.org/10.1117/12.856793
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

Abstract

We present the design for a stigmatic grazing incidence X-ray spectrograph designed for solar coronal observations. The spectrograph is composed of a slit, a pair of paraboloid mirrors and a plano varied-line-space grating. All reflective surfaces of the spectrograph operate at an angle of incidence of 88 degrees, and covers a wavelength range of 0.6 to 2.4nm (0.5 to 2.0keV). The design achieves 1.5pm spectral resolution and 15 μm spatial resolution over a 2.5mmlong slit. The current spectrograph design is intended for a sounding rocket experiment, and designed to fit inside a NASA sounding rocket payload behind a 1.1m focal length Wolter Type-1 telescope. This combination will have a 2.5arcsec spatial resolution and a 8 arcminute slit length. We are currently fabricating a laboratory prototype of the spectrograph to demonstrate the performance and establish the alignment procedures for a flight model.

Citation Download Citation

Ken Kobayashi, Jonathan Cirtain, Leon Golub, Kelly Korreck, Peter Cheimets, Edward Hertz, and David Caldwell "Stigmatic grazing-incidence x-ray spectrograph for solar coronal observations", Proc. SPIE 7732, Space Telescopes and Instrumentation 2010: Ultraviolet to Gamma Ray, 773233 (29 July 2010); https://doi.org/10.1117/12.856793

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