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Spectroscopic photoelectric imaging Fabry-Perot interferometer - Its development and preliminary observational resultsIn order to observe extended astronomical objects at high spatial and spectral resolution, we have constructed a spectroscopic photoelectric imaging Fabry-Perot interferometer (SPIFI). Among the properties chosen for the instrument are an air-spaced, piezoelectrically scanned design allowing an accurately settable free spectral range and employing a single etalon of high finesse. Careful design of the etalon mountings and optical train preserves high light throughput. We either obtain spectra of single spatial elements with a photomultiplier or use an SEC vidicon detector to record a series of images through the interferometer while scanning the wavelength in discrete steps. The latter procedure yields sufficient information to reconstruct spectral features over the entire object. For the conditions assumed, either series of observations requires only a small fraction of a rotational period for Jupiter or Saturn, for example.
Document ID
19760039830
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Smith, W. H.
Born, J.
Cochran, W. D.
Gelfand, J.
Date Acquired
August 8, 2013
Publication Date
March 1, 1976
Publication Information
Publication: Applied Optics
Volume: 15
Subject Category
Instrumentation And Photography
Accession Number
76A22796
Funding Number(s)
CONTRACT_GRANT: NGL-31-001-242
Distribution Limits
Public
Copyright
Other

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