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Proceedings Paper

SDO EVE CCD and thin foil filter characterization and selection
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Paper Abstract

The NASA Solar Dynamics Observatory (SDO), scheduled for launch in 2009, incorporates a suite of instruments including the EUV Variability Experiment (EVE). The Multiple EUV Grating Spectrograph (MEGS) channels use concave reflection gratings to image solar spectra onto CCDs that are operated at -100°C. MEGS provides 0.1nm spectral resolution between 5-105nm every 10 seconds with an absolute accuracy of better than 25% over the SDO 5- year mission. Characterizations and selection testing of the CCDs and the thin foil filters for SDO EVE have been performed with both in-band and visible illumination. CCD selection was based on results from testing in LASP facility Calibration and Test Equipment (CTE3) as well as results from at testingMIT. All CCDs meet the requirements for electronics gain, flat field, Quantum Efficiency (QE), dark current, reverse clock, CTE, bad pixels and the -120°C survival test. The thin foil filters selection was based on tests performed at LASP facilities and NIST. All filters provide >106 attenuation of visible light with the proper EUV transmission needed for order sorting capabilities and are free of critical pinholes.

Paper Details

Date Published: 20 September 2007
PDF: 12 pages
Proc. SPIE 6689, Solar Physics and Space Weather Instrumentation II, 66890O (20 September 2007); doi: 10.1117/12.732596
Show Author Affiliations
Matthew A. Triplett, Lab. for Atmospheric and Space Physics (United States)
David A. Crotser, Lab. for Atmospheric and Space Physics (United States)
Thomas N. Woods, Lab. for Atmospheric and Space Physics (United States)
Francis G. Eparvier, Lab. for Atmospheric and Space Physics (United States)
Phillip C. Chamberlin, Lab. for Atmospheric and Space Physics (United States)
Gregory D. Berthiaume, MIT Lincoln Lab. (United States)
David M. Weitz, MIT Lincoln Lab. (United States)
Robert E. Vest, National Institute of Standards and Technology (United States)


Published in SPIE Proceedings Vol. 6689:
Solar Physics and Space Weather Instrumentation II
Silvano Fineschi; Rodney A. Viereck, Editor(s)

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