A new method of determining nebular radial velocities from Fabry-Perot interferograms

Details A new method of determining nebular radial velocities from Fabry-Perot interferograms A new method of determining nebular radial velocities from Fabry-Perot interferograms

Aug 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26a...124..236t&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 124, no. 2, Aug. 1983, p. 236-240.

Astronomy and Astrophysics

Astrophysics

2

Fabry-Perot Interferometers, Image Processing, Nebulae, Radial Velocity, Galaxies, Hydrogen Clouds

Scientific paper

After discussing the method by which interferograms are presently digitized with a PDS microphotometer and then analyzed automatically to yield radial velocity fields, a comparison is made with results obtained from a manually measured interferogram. It is found that the novel, automatic method, which works at constant dispersion and is more rapid and convenient than the manual one, presents a satisfactory alternative. The shortcomings inherent in all such methods are noted, and attention is given to the improved instrumentation and reduction procedures which are becoming available.

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