A Fast and Portable Reimplementation of Piskunov and Valenti’s Optimal-Extraction Algorithm with Improved Cosmic-Ray Removal and Optimal Sky Subtraction


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… (More)


12 Figures and Tables