A 512-channel digital autocorrelation spectrometer for interstellar molecular line observation.

Details A 512-channel digital autocorrelation spectrometer for interstellar molecular line observation. A 512-channel digital autocorrelation spectrometer for interstellar molecular line observation.

Mar 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995acasn..36...80z&link_type=abstract

Acta Astron. Sin., Vol. 36, No. 1, p. 80 - 85

Astronomy and Astrophysics

Astronomy

Spectrometers: Radio Astronomy, Radio Spectrometers: Interstellar Molecules

Scientific paper

A 512-channel digital autocorrelation spectrometer was built in 1990 for the observation of interstellar molecular lines. The clock rate of the spectrometer is selectable in the range from 20 MHz to 625 kHz by cascade factors of 2. The maximum analyzing bandwidth is 10 MHz. The highest frequency resolution is about 0.61 kHz for 312.5 kHz analysing bandwidth which corresponds to a velocity resolution of about 0.1 km/s at 18 cm band. Parts of observational results of OH maser sources at 18 cm band which was obtained by the 25 m radio telescope at Shanghai Observatory in 1992 are given.

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