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Use of rotating pinholes and reticles for calibration of cloud droplet instrumentationCalibration devices for the Forward Scattering Spectrometer Probe (FSSP) and the Optical Array Probe (OAP) were developed. The device used with the FSSP is a rotating pinhole calibrator. It utilizes light diffracted by a pinhole of a known diameter to simulate scattered light from a water droplet. This device can be used to calibrate the FSSP, measure the FSSP's optical collection angles and for instrument alignment and troubleshooting. The device used with the OAP is a rotating reticle calibrator. Chrome disks of a known diameter on the reticle are used for calibration of the OAP and for determining the OAP's response to out-of-focus particles in the probe volume.
Document ID
19910045748
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Hovenac, Edward A.
(NASA Lewis Research Center; Sverdrup Technology, Inc. Cleveland, OH, United States)
Hirleman, E. Dan
(Arizona State University Tempe, United States)
Date Acquired
August 14, 2013
Publication Date
February 1, 1991
Publication Information
Publication: Journal of Atmospheric and Oceanic Technology
Volume: 8
ISSN: 0739-0572
Subject Category
Instrumentation And Photography
Accession Number
91A30371
Distribution Limits
Public
Copyright
Other

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