The STELLA pipeline and all sources are now available for download. If you encounter any problems, please send an email to azuri.ritter@gmail.com.
If you use any of these programs to reduce data for a publication you must cite the paper "A Fast and Portable Reimplementation of Piskunov and Valenti's Optimal Extraction Algorithm with improved Cosmic Ray Removal and Optimal Sky Subtraction" by A. Ritter, E. A. Hyde, and Q. A. Parker, published in PASP 126, February 2014.