Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000mnras.315..248g&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Volume 315, Issue 2, pp. 248-262.
Astronomy and Astrophysics
Astronomy
7
Instrumentation: Spectrographs, Methods: Data Analysis, Galaxies: Individual: Ngc 1808, Galaxies: Individual: Ngc 2442, Galaxies: Individual: Circinus, Galaxies: Kinematics And Dynamics
Scientific paper
The data reduction process for optical emission-line observations of galaxies using the TAURUS-2 Fabry-Perot interferometer mounted on the 3.9-m Anglo-Australian Telescope is described in detail. The initial steps (bias subtraction, flat-fielding, etc.) are the same as for calibration of CCD images, and the wavelength calibration is similar to that in optical spectroscopy. The final steps are specific to Fabry-Perot instruments, and include the fitting of several instrumental parameters and a phase correction to convert the raw (x,y,z) data cube into a useful position-velocity (α,δ,v) cube. Software has been written to assist with the latter steps of the data reduction. Hα observations of NGC 1808, NGC 2442 and Circinus are used to demonstrate the reduction process.
Gordon Scott
Houghton Sally
Jones Keith
Koribalski Barbel
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