Physics – Optics
Scientific paper
Dec 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987ap%26ss.139..327b&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 139, no. 2, Dec. 1987, p. 327-335. Research supported by the Ministry of S
Physics
Optics
6
Emission Spectra, Fabry-Perot Spectrometers, High Resolution, Line Spectra, Planetary Nebulae, Accuracy, Cassegrain Optics, Data Acquisition, Etalons, Servocontrol, Visible Spectrum
Scientific paper
The authors describe here a scanning piezo-electric Fabry-Pérot spectrometer (operating in the photon-counting mode and whose plate spacing and parallelism are maintained by a servo-controlled system to ensure high accuracy) for the study of emission lines from extended astronomical objects in the spectral range 4500 - 7000 Å. Details of the optical set-up and the Data Acquisition System are described. Its performance at the Cassegrain focus of the 1 m telescope at Kavalur is discussed. Some line profiles on planetary nebulae studied with the above spectrometer are also presented.
Anandarao Boddapati G.
Banerjee Dipankar P. K.
Desai J. N.
Jog N. S.
Kikani P. K.
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