TY - JOUR
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
U2 - 10.1086/675407
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 -