Extended Aperture Photometry of K2 RR Lyrae stars

We present the method of the Extended Aperture Photometry (EAP) that we applied to K2 RR Lyrae stars. Our aim is to minimize the instrumental variations of attitude control maneuvers by using apertures that cover the positional changes in the field of view thus contain the stars during the whole observation. We present example light curves that we compared to the light curves from the K2 Systematics Correction (K2SC) pipeline applied to the automated Single Aperture Photometry (SAP) and to the Pre-search Data Conditioning Simple Aperture Photometry (PDCSAP) data.
Comment: 3 pages, 1 figure, proceedings of the Joint TASC2-KASC9-SPACEINN-HELAS8 Conference "Seismology of the Sun and the Distant Stars 2016", to be published in EPJ WoC