KBonus Background Archive Description ("KBONUS-BKG")

KBONUS-BKG uses the Linearized Field Deblending (LFD) method, a Point Spread Function (PSF) photometry algorithm, to create PSF light curves. Gaia DR3 data is used as an input catalog to extract 606,900 light curves, from which 406,548 correspond to background sources and 200,352 are Kepler targets. PSF models were fitted using Kepler's full-frame images and later evaluated in the Target Pixel Files (TPFs) of Kepler targets. The LFD method provides a mean PSF estimate and a perturbed PSF that corrects for systematics within an observing quarter. Additionally, aperture photometry is estimated directly from the PSF shape per source and optimized for flux completeness and contamination. The PSF light curves have comparable quality as those computed by the Kepler pipeline, with combined differential photometric precision (CDPP) values under 100 ppm for sources brighter than G = 16. The light curve files include PSF, aperture photometry, and relevant extraction metrics. A full description of this dataset can be found in Martinez-Palomera et al. (2023) and the Python library PSFMachine that was used to extract the light curves for this data set.