Data Pipelines for the TRES Echelle Spectrograph
Douglas J. Mink
Smithsonian Astrophysical Observatory, Cambridge, MA 02138
The Tillinghast Reflector Echelle Spectrograph (TRES) is a two-fiber
(object and sky spectra) optical echelle spectrograph on the
1.5-meter Tillinghast telescope at the Smithsonian Astrophysical
Observatory's Fred L. Whipple Observatory on Mt. Hopkins in Arizona.
An IRAF-based processing pipeline has been written to reduce spectra
keeping the maximum wavelength precision, which varies from 0.03 to
0.07 Angstroms/pixel over 51 orders covering a range of 3850 to
9100 Angstroms. A major design goal was to use the same software
at the telescope for quick-look real-time processing and, with
relatively few parameter changes, reduction with more accuracy for
scientific processing. A modular system was written in IRAF for
portability and simplicity, so that scientists can re-reduce
their data in various ways to optimize its quality for their needs.
IRAF tasks developed for the SAO FAST long-slit and Hectospec
multi-fiber spectrographs, as well as NOAO-developed echelle tasks,
were adapted for this instrument.
Presented at the Twentieth Annual Conference on Astronomical Data Analysis
Sofware and Systems (ADASS XX)
in Boston, Massachusetts, November 7-11, 2010
Use this Reference:
Mink, D. J., 2011, in Astronomical Data Analysis Software and Systems XX,
ASP Conference Series, Vol. 442, Edited by I. Evans, A. Accomazzi, D. Mink,
and A. Rots, San Francisco: Astronomical Society of the Pacific, p. 307.