Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21345206b&link_type=abstract
American Astronomical Society, AAS Meeting #213, #452.06; Bulletin of the American Astronomical Society, Vol. 41, p.348
Astronomy and Astrophysics
Astronomy
Scientific paper
It was determined in May of 2000 that out gassed materials have been building up on Chandra's ACIS optical light blocking filters since its launch. In order to make accurate models of the distribution and thickness of the contaminants so that corrections to collected data can be made, the contaminant buildup has been tracked using Fe and Mn L-lines from the external 55Fe calibration source. Uncertainty in the details of the source spectrum currently limit the accuracy of these determinations. We are obtaining a high energy resolution spectrum of the ACIS 55Fe External Calibration source with microcalorimeter detectors that have 5 eV FWHM energy resolution. This poster will show how we can measure the emission spectrum of a flight spare unit of Chandra's 55Fe source. This work was supported by the National Science Foundation's REU program and the Department of Defense's ASSURE program through NSF Award AST-0453442.
Besemer Abby
Brandl D.
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