Pushing CASPEC to the limit.

Details Pushing CASPEC to the limit. Pushing CASPEC to the limit.

Dec 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989msngr..58...56w&link_type=abstract

The Messenger, vol. 58, p. 56-58

Physics

Spectrographs: Data Processing

Scientific paper

Recent CASPEC users will have noticed that there is a continuing programme to upgrade the capabilities of the spectrograph. Together with electromechanical modifications of the spectrograph itself, there have been changes in the data reduction procedures. In addition, there is now substantially more experience with the biases that ESO reduction techniques introduce into the data. These improvements and the increased understanding of the critical processes can lead to a substantial increase in the limiting magnitude of CASPEC over that obtained in the past. Here I want to discuss some of the important choices to be made if good signal-to-noise (SIN) ratios, together with high resolution, is needed for faint objects. A general description of CASPEC has been given by D'Odorico et al. (1 983).

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