Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...217..368b&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 217, no. 1-2, June 1989, p. 368-374. Research supported by CNR, Universita di
Astronomy and Astrophysics
Astrophysics
34
Astronomical Spectroscopy, Birefringence, Fabry-Perot Interferometers, Optical Filters, Solar Instruments, Charge Coupled Devices, Diffraction Patterns, Solar Atmosphere, Spectral Resolution
Scientific paper
The design of an optical device consisting of a universal birefringent filter and a Fabry-Perot interferometer to obtain monochromatic images of the solar atmosphere with a spectral resolving power of about 300,000 is discussed. The instrument may be continuously tuned between 4200 A and 7000 A and, using commercially available Fabry-Perot, may reach a wavelength stability of about 0.1 mA. This system preserves all the spatial resolution delivered by the telescope and limits the size of the observable field to a maximum of 400 widths of the telescope diffraction pattern.
Bonaccini Domenico
Cavallini Fabio
Ceppatelli Guido
Righini Alberto
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