Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984pasp...96..263j&link_type=abstract
Publications of the Astronomical Society of the Pacific, Vol. 96, NO. 577, P. 263, 1984
Astronomy and Astrophysics
Astronomy
15
Scientific paper
The imaging mode of a portable Fabry-Perot interferometer system is described. A focal reducer (f/8→ f/0.95) allows one to obtain filtergrams of extended sources and, when coupled to a red Fabry-Perot interferometer (600.0 nm to 700.0 nm), interferograms of galactic nebulae. The detector is a photographic plate. To reduce the digitized interferograms, a complete set of software has been developed for the density-intensity conversion, the correction of optical distortion, radial-velocity measurements from the interferograms, and the making of LSR velocity maps. The algorithms are explained and some results of our study of the H II region S142 illustrate our data-handling techniques.
Joncas Gilles
ROY Jean-Rene
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