Physics – Optics
Scientific paper
Jan 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986spie..627..707p&link_type=abstract
IN: Instrumentation in astronomy VI; Proceedings of the Meeting, Tucson, AZ, Mar. 4-8, 1986. Part 2 (A87-36376 15-35). Bellingha
Physics
Optics
3
Astronomical Spectroscopy, Cassegrain Optics, Data Reduction, Image Processing, Calibrating, Charge Coupled Devices, Echelle Gratings, Faint Objects, Polynomials
Scientific paper
This paper describes the echelle reduction package available within MIDAS, the ESO image processing system which runs on VAX computers. The reduction method is currently used to process spectra from the echelle spectrograph at the Cassegrain focus of the ESO 3.6 m telescope at La Silla, Chile. The package is very modular, with intermediate data structures allowing communication between the different reductions steps. The basic reduction steps of wavelength calibration, data extraction, and flux calibration are performed with minimal user interaction. Some results showing the accuracy of the method are presented.
Brinks Elias
Dodorico Sandro
Ponz Daniel
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