Computer Science – Performance
Scientific paper
Dec 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aas...185.1010k&link_type=abstract
American Astronomical Society, 185th AAS Meeting, #10.10; Bulletin of the American Astronomical Society, Vol. 26, p.1323
Computer Science
Performance
Scientific paper
We have developed a pressure scanning cold Fabry-Perot spectrometer for the study of the warm diffuse component of the interstellar medium. In order to reduce thermal background and increase sensitivity optical components are cooled to 77K in a LN_2 cryostat. Wavelength scanning is accomplished by changing N_2 pressure in the etalon chamber. The instrument can be scanned over its free spectral range of 300km;s(-1) , and it has a velocity resolution of 20km;s(-1) . A high performance InSb photodiode is used with an integrating preamplifier. This instrument, with its high spectral resolution and large field of view (~ 1(o) ) is well suited for observation of line emission from extended low surface brightness objects. Its design has been developed to allow detection of the diffuse Brackett-gamma and Brackett-alpha emission lines from the warm ionized component of the ISM.
Bennet C. L.
Kutyrev Alexander S.
Moseley Samuel Harvey
Roesler Fred L.
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