Computer Science
Scientific paper
Jul 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001esasp.460..389c&link_type=abstract
The Promise of the Herschel Space Observatory. Eds. G.L. Pilbratt, J. Cernicharo, A.M. Heras, T. Prusti, & R. Harris. ESA-SP 460
Computer Science
Stars: Formation, Missions: First, Data Processing Techniques: Sideband Deconvolution
Scientific paper
Complete unbiased line surveys will form an important part of the HIFI instrument on board of FIRST's operation, and much observing time will be devoted to them. To be properly analyzed, spectral surveys require a process of deconvolution from double-sideband to single-sideband spectra. The quality of the reconstructed SSB spectrum, achieved through the Maximum Entropy Method, varies depending on several factors, namely i) the spacing between DSB scans, ii) the pointing errors, and iii) the sideband gain ratio. The aim of our work is to optimize the general procedure for line surveys observations, by minimizing the errors introduced by those factors. The analysis consists simulating DSB observations over the 960-1000 GHz band while letting the selected parameter(s) vary. The reconstruction of the SSB spectrum is than quantitatively compared to the model spectrum. In this preliminary report, only the spacing and the pointing offsets effects have been considered.
Comito Carlo
Schilke Peter
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