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Centroid position measurements and subpixel sensitivity variations with the MAMA detectorInitial measurements of the position sensitivity of a visible-light multianode microchannel array detector show that centroid calculations for image spots are accurate to better than 0.04 pixels even with sources that are essentially delta functions at the photocathode.Subpixel sensitivity variations of 10-15 percent are typically found for pixels in the array. Variations as large as 30 percent are possible in the worst conditions. These variations limit the photometric accuracy of the detector when very small scale features are observed. The photometric accuracy and the position sensitivity of the detector appear to be limited by cross-coupling effects within the anode array. Initial measurements with more recent designs of the detector show that most or all of this cross-coupling has been eliminated.
Document ID
19890049339
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Morgan, Jeffrey S.
(Stanford Univ. CA, United States)
Slater, D. C.
(Stanford Univ. CA, United States)
Timothy, John G.
(Stanford University CA, United States)
Jenkins, E. B.
(Princeton University Observatory, NJ, United States)
Date Acquired
August 14, 2013
Publication Date
March 15, 1989
Publication Information
Publication: Applied Optics
Volume: 28
ISSN: 0003-6935
Subject Category
Electronics And Electrical Engineering
Accession Number
89A36710
Funding Number(s)
CONTRACT_GRANT: NASW-29389
CONTRACT_GRANT: NCA2-93
CONTRACT_GRANT: NSG-7618
CONTRACT_GRANT: NASW-4093
Distribution Limits
Public
Copyright
Other

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