A compact high-throughput imaging EUV/FUV spectrometer

Erik Wilkinson; Nicholas M. Schneider; Stephen R. Steg; James C. Westfall; Bret P. Lamprecht; John Paul Andrews; Oswald H. W. Siegmund; Matthew N. Beasley

doi:10.1117/12.459767

24 February 2003 A compact high-throughput imaging EUV/FUV spectrometer

Erik Wilkinson, Nicholas M. Schneider, Stephen R. Steg, James C. Westfall, Bret P. Lamprecht, John Paul Andrews, Oswald H. W. Siegmund, Matthew N. Beasley

Author Affiliations +

Proceedings Volume 4854, Future EUV/UV and Visible Space Astrophysics Missions and Instrumentation; (2003) https://doi.org/10.1117/12.459767
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

Abstract

We present the optical design and predicted performance of the Extreme Ultraviolet Spectrometer (EUVS) developed for the Jupiter Magnetospheric Explorer (JMEX) mission. JMEX was proposed as small explorer (SMEX) mission designed to observe the Jovian system to study the dynamical relationship between Jupiter's magnetosphere and Io, the primary source of material for the Io plasma torus. NASA selected JMEX as one of six SMEX missions for detailed technical study. While JMEX was ultimately not selected for flight, the EUVS instrument design has a unique set of performance characteristics that may be useful for other applications, such as a multi-object spectrometer, a push-broom spectrometer for diffuse objects, or an imaging spectrometer with high spatial resolution. The EUVS is an imaging spectrograph originally designed to observe the Io plasma torus. EUVS provides moderate resolution (~0.1 nm) spectra between 64 to 114 nm over +/- 260" with 2" spatial resolution. The optical design is based on an off-axis Gregorian telescope, where the secondary mirror is replaced with an aberration-corrected holographic grating. The grating diffracts and focuses the UV light onto a cross-delay line microchannel plate detector with a potassium bromide photocathode. The primary mirror and grating are coated with boron carbide to maximize the normal incidence reflectivity at the shortest wavelengths. This high throughput, two-element design provides a compact instrument suitable for a small spacecraft while maintaining an efficient optical path that provides 7-12 cm² of effective area.

Citation Download Citation

Erik Wilkinson, Nicholas M. Schneider, Stephen R. Steg, James C. Westfall, Bret P. Lamprecht, John Paul Andrews, Oswald H. W. Siegmund, and Matthew N. Beasley "A compact high-throughput imaging EUV/FUV spectrometer", Proc. SPIE 4854, Future EUV/UV and Visible Space Astrophysics Missions and Instrumentation, (24 February 2003); https://doi.org/10.1117/12.459767

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available