Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004pasp..116..362c&link_type=abstract
The Publications of the Astronomical Society of the Pacific, Volume 116, Issue 818, pp. 362-376.
Astronomy and Astrophysics
Astronomy
274
Instrumentation: Spectrographs, Methods: Data Analysis, Techniques: Spectroscopic
Scientific paper
We describe an IDL-based package for the reduction of spectral data obtained with SpeX, a medium-resolution, 0.8-5.5 μm cross-dispersed spectrograph and imager for the NASA Infrared Telescope Facility. The package, called Spextool, carries out all the procedures necessary to produce fully reduced spectra including preparation of calibration frames, processing and extraction of spectra from science frames, wavelength calibration of spectra, and flux calibration of spectra. The package incorporates an ``optimal extraction'' algorithm for point-source data and also generates realistic error arrays associated with the extracted spectra. Because it is fairly quick and easy to use, requiring minimal user interaction, Spextool can be run by observers at the telescope to estimate the signal-to-noise ratio of their data. We describe the procedures incorporated into Spextool and show examples of extracted spectra.
Cushing Michael. C.
Rayner John T.
Vacca William D.
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