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CO/H2 in Translucent CloudsA thorough examination of techniques to improve the resolution of the FUSE spectrograph was undertaken. These involved co-adding time tagged data very carefully so as to remove any blurs caused by drift. In addition, data was binned by detector pulse height bin (to eliminate any positional vs. gain variations, e.g. "walk"). These techniques only resulted in an extremely modest increase in the spectral resolution, insufficient to allow the CO/H2 studies to be performed. The only remaining potential source of blur was defocus - implying the instrument was never properly focused on orbit. Private discussions with B.G. Anderson of the FUSE team resulted in my learning that this was in fact the case - the slidgrating distance was never optimized on orbit - resulting in a degradation of the peak performance of the instrument. Unfortunately, this was never publicized, even to myself, a member of the instrument tem and the spectrograph designer.
Document ID
20050196656
Acquisition Source
Headquarters
Document Type
Other
Authors
Green, James
(Colorado Univ. Boulder, CO, United States)
Date Acquired
August 23, 2013
Publication Date
January 1, 2005
Subject Category
Instrumentation And Photography
Report/Patent Number
CU-1534914
Funding Number(s)
CONTRACT_GRANT: NAG5-11490
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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