A fast and portable reimplementation of Piskunov and Valenti's optimal-extraction algorithm with improved cosmic-ray removal and optimal sky subtraction

A. Ritter; E. A. Hyde; Q. A. Parker

doi:10.1086/675407

A fast and portable reimplementation of Piskunov and Valenti's optimal-extraction algorithm with improved cosmic-ray removal and optimal sky subtraction

A. Ritter
, E. A. Hyde
, Q. A. Parker

Western Sydney University

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

Abstract

We present a fast and portable reimplementation of Piskunov and Valenti's optimal-extraction algorithm (Piskunov & Valenti 2002) in C/C++ together with full uncertainty propagation, improved cosmicray removal, and an optimal background-subtraction algorithm. This reimplementation can be used with IRAF and most existing data-reduction packages and leads to signal-to-noise ratios close to the Poisson limit. The algorithm is very stable, operates on spectra from a wide range of instruments (slit spectra and fibre feeds), and has been extensively tested for VLT/UVES, ESO/CES, ESO/FEROS, NTT/EMMI, NOT/ALFOSC, STELLA/SES, SSO/ WiFeS, and finally, P60/SEDM-IFU data.

Original language	English
Pages (from-to)	170-179
Number of pages	10
Journal	Publications of the Astronomical Society of the Pacific
Volume	126
Issue number	936
DOIs	https://doi.org/10.1086/675407
Publication status	Published - 2014

Keywords

algorithms

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10.1086/675407

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title = "A fast and portable reimplementation of Piskunov and Valenti's optimal-extraction algorithm with improved cosmic-ray removal and optimal sky subtraction",

abstract = "We present a fast and portable reimplementation of Piskunov and Valenti's optimal-extraction algorithm (Piskunov \& Valenti 2002) in C/C++ together with full uncertainty propagation, improved cosmicray removal, and an optimal background-subtraction algorithm. This reimplementation can be used with IRAF and most existing data-reduction packages and leads to signal-to-noise ratios close to the Poisson limit. The algorithm is very stable, operates on spectra from a wide range of instruments (slit spectra and fibre feeds), and has been extensively tested for VLT/UVES, ESO/CES, ESO/FEROS, NTT/EMMI, NOT/ALFOSC, STELLA/SES, SSO/ WiFeS, and finally, P60/SEDM-IFU data.",

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doi = "10.1086/675407",

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T1 - A fast and portable reimplementation of Piskunov and Valenti's optimal-extraction algorithm with improved cosmic-ray removal and optimal sky subtraction

AU - Ritter, A.

AU - Hyde, E. A.

AU - Parker, Q. A.

PY - 2014

Y1 - 2014

N2 - We present a fast and portable reimplementation of Piskunov and Valenti's optimal-extraction algorithm (Piskunov & Valenti 2002) in C/C++ together with full uncertainty propagation, improved cosmicray removal, and an optimal background-subtraction algorithm. This reimplementation can be used with IRAF and most existing data-reduction packages and leads to signal-to-noise ratios close to the Poisson limit. The algorithm is very stable, operates on spectra from a wide range of instruments (slit spectra and fibre feeds), and has been extensively tested for VLT/UVES, ESO/CES, ESO/FEROS, NTT/EMMI, NOT/ALFOSC, STELLA/SES, SSO/ WiFeS, and finally, P60/SEDM-IFU data.

AB - We present a fast and portable reimplementation of Piskunov and Valenti's optimal-extraction algorithm (Piskunov & Valenti 2002) in C/C++ together with full uncertainty propagation, improved cosmicray removal, and an optimal background-subtraction algorithm. This reimplementation can be used with IRAF and most existing data-reduction packages and leads to signal-to-noise ratios close to the Poisson limit. The algorithm is very stable, operates on spectra from a wide range of instruments (slit spectra and fibre feeds), and has been extensively tested for VLT/UVES, ESO/CES, ESO/FEROS, NTT/EMMI, NOT/ALFOSC, STELLA/SES, SSO/ WiFeS, and finally, P60/SEDM-IFU data.

KW - algorithms

UR - http://handle.westernsydney.edu.au:8081/1959.7/uws:41539

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DO - 10.1086/675407

M3 - Article

SN - 0004-6280

VL - 126

SP - 170

EP - 179

JO - Publications of the Astronomical Society of the Pacific

JF - Publications of the Astronomical Society of the Pacific

IS - 936

ER -

A fast and portable reimplementation of Piskunov and Valenti's optimal-extraction algorithm with improved cosmic-ray removal and optimal sky subtraction

Abstract

Keywords

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