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Fabry-Perot observations of comet AustinPreliminary results of a program to observe Comet Austin (1990c1) from 16 April to 4 May and from 11 May to 27 May 1990 using the West Auxiliary of the McMath Solar Telescope on Kitt Peak, Arizona were presetned. The observations were made with a 15 cm duel-etalon Fabry-Perot scanning and imaging spectrometer with two modes of operation: a high resolution mode with a velocity resolution of 1.2 km/s and a medium resolution mode with a velocity resolution 10 km/s. Scanning data was obtained with an RCA C31034A photomultiplier tube and imaging data was obtained with a Photometrics LN2 cooled CCD camera with a 516 by 516 Ford chip. The results include: (1) information on the coma outflow velocity from high resolution spectral profiles of (OI)6300 and NH2 emissions, (2) gaseous water production rates from medium resolution observation of (OI)6300, (3) spectra of H2O(+) emissions in order to study the ionized component of the coma, (4) spatial distribution of H2O(+) emission features from sequences of velocity resolved images (data cubes), and (5) spatial distribution of (OI)6300 and NH2 emissions from medium resolution images. The field of view on the sky was 10.5 arcminutes in diameter. In the imaging mode the CCD was binned 4 by 4 resulting in 7.6 sec power pixel and a subarray readout for a field of view of 10.5 min.
Document ID
19910011708
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Schultz, David
(Wisconsin Univ. Madison., United States)
Scherb, F.
(Wisconsin Univ. Madison., United States)
Roesler, F. L.
(Wisconsin Univ. Madison., United States)
Li, G.
(Wisconsin Univ. Madison., United States)
Harlander, J.
(Wisconsin Univ. Madison., United States)
Roberts, T. P. P.
(Wisconsin Univ. Madison., United States)
Vandenberk, D.
(Wisconsin Univ. Madison., United States)
Nossal, S.
(Wisconsin Univ. Madison., United States)
Coakley, M.
(Wisconsin Univ. Madison., United States)
Oliversen, Ronald J.
(National Solar Observatory Tucson, AZ., United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1990
Publication Information
Publication: Southwest Research Inst., Workshop on Observations of Recent Comets (1990)
Subject Category
Astrophysics
Accession Number
91N21021
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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