AAS 207th Meeting, 8-12 January 2006
Session 29 Observation Processing, Calibration and Control
Poster, Monday, 9:20am-7:00pm, January 9, 2006, Exhibit Hall

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[29.08] GBTIDL: A New Package for Reduction and Analysis of GBT Spectral Line Data

R. Garwood, J. Braatz, P. Marganian, N. Radziwill (NRAO)

GBTIDL is an interactive package for the reduction and analysis of spectral line data taken with the Green Bank Telescope (GBT). The package is written entirely in IDL, and consists of a set of straightforward yet flexible calibration, averaging, and analysis procedures (the "GUIDE layer") modeled after the UniPOPS and CLASS data reduction philosophies, a customized plotter with many built-in visualization features, and Data I/O and toolbox functionality that can be used for more advanced tasks. GBTIDL makes use of data structures that represent a calibrated or uncalibrated spectrum, and the package operates on these structures as a straightforward calculator. For I/O, the package uses SDFITS format data. A "filler" is available to convert raw GBT FITS files into SDFITS format. GBTIDL can be run online, giving users access to the most recent data coming off the telescope, or it can be run offline on preprocessed SDFITS files. Limited support for continuum data from the GBT is also available. The program is freely distributed. Complete documentation and project information is available at http://gbtidl.sourceforge.net

The National Radio Astronomy Observatory is operated for the National Science Foundation (NSF) by Associated Universities, Inc. (AUI), under a cooperative agreement.

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Bulletin of the American Astronomical Society, 37 #4
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