Sherpa: a mission-independent data analysis application

Peter Freeman; Stephen Doe; Aneta Siemiginowska

doi:10.1117/12.447161

1 November 2001 Sherpa: a mission-independent data analysis application

Peter Freeman, Stephen Doe, Aneta Siemiginowska

Proceedings Volume 4477, Astronomical Data Analysis; (2001) https://doi.org/10.1117/12.447161
Event: International Symposium on Optical Science and Technology, 2001, San Diego, CA, United States

Abstract

The ever-increasing quality and complexity of astronomical data underscores the need for new and powerful data analysis applications. This need has led to the development of Sherpa, a modeling and fitting program in the CIAO software package that enables the analysis of multi-dimensional, multi-wavelength data. In this paper, we present an overview of Sherpa's features, which include: support for a wide variety of input and output data formats, including the new Model Descriptor List (MDL) format; a model language which permits the construction of arbitrarily complex model expressions, including ones representing instrument characteristics; a wide variety of fit statistics and methods of optimization, model comparison, and parameter estimation; multi-dimensional visualization, provided by ChIPS; and new interactive analysis capabilities provided by embedding the S-Lang interpreted scripting language. We conclude by showing example Sherpa analysis sessions.

Citation Download Citation

Peter Freeman, Stephen Doe, and Aneta Siemiginowska "Sherpa: a mission-independent data analysis application", Proc. SPIE 4477, Astronomical Data Analysis, (1 November 2001); https://doi.org/10.1117/12.447161

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