Computer Science – Performance
Scientific paper
Jun 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982msngr..28....9a&link_type=abstract
ESO Messenger, June 1982, p. 9-11.
Computer Science
Performance
Astronomical Photometry, Fabry-Perot Interferometers, Active Galaxies, Milky Way Galaxy, Radial Velocity
Scientific paper
Design features and performance parameters of the TAURUS scanning Fabry-Perot system used in concert with an image photon counting system (IPCS) at La Silla are described. The TAURUS device was installed at the Cassegrain focus of a 3.6 m telescope, and will be used in studies where velocity data are needed as a function of the position of extended objects. The Fabry-Perot image is scanned by the IPCS, with each pixel mapping out a spectral line profile within limits of the blocking interference filter. A profile can therefore be constructed for each part of the object under examination. The angle dependence of the light passing through the grating allows analysis of individual wavelengths, which can be summed to yield equivalent narrow band interference pictures. Observations of active galaxies, SNR, and the velocity structures of emission line features are indicated.
Atherton P. D.
Danziger Ivan John
Fosbury Robert A. E.
Taylor Karen
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