Publication Date

April 2019


Seth Redfield




English (United States)


In order to reduce data from faint targets in crowded fields in K2, the second phase of the Kepler Space Telescope’s mission, we have modified codes developed by Vanderburg et al. (2011) and Van Eylen et al. (2014) to utilize the point spread function (PSF) to obtain high quality light curves. The code is optimized for faint targets (Kp > 15.5) in the K2 field by utilizing the concept of effective point-spread function (ePSF). The modifications are particularly useful when searching for transiting signals around white dwarf stars, such as WD1145+017, which was discovered in K2 data to have disintegrating asteroids in 4.5 hour orbits. The technique will also extract targets from a crowded field and extended emission of bright star halos in order to produce light curves and search for transiting bodies. We present comparisons of light curves using this technique to more traditional methods.

Available for download on Wednesday, April 15, 2020



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