In the Kepler/K2 data analysis performed to date, aperture photometry has generally been used, but this method has not given any reasonable results when examining nearby sources due to the insufficient number of pixels on Kepler's CCD camera. The point-spread function (PSF) technique prepared by Libralato et al. (2016a), which presents promising results in undersampled pixels even in crowded star groups, was used in this study. Open cluster stars M 35 and NGC 2158 in the K2 Campaign 0 were selected as the target field. By applying the PSF method to the high angular resolution input catalogue prepared using the Asiago Schmidt telescope, M 35 and NGC 2158 provided the opportunity to examine the light curves of faint stars (K_p > 15.5) in crowded regions and gave better results compared to aperture photometry. In this study, I detrended ~50 000 raw light curves from systematic effects and spacecraft motion effects. I ultimately found two candidate host stars that could have possible planetary transits.

迄今为止，在开普勒/ K2数据分析中，通常使用孔径光度法，但是由于开普勒CCD相机上的像素数量不足，该方法在检查附近的光源时没有给出任何合理的结果。Libralato等人编写的点扩展函数（PSF）技术。（2016a）在本研究中使用了即使在拥挤的恒星群中也能在欠采样像素中显示出令人鼓舞的结果。选择了K2 Campaign 0中的疏散星团M 35和NGC 2158作为目标区域。通过将PSF方法应用于使用Asiago Schmidt望远镜准备的高角分辨率输入目录，M 35和NGC 2158提供了检查微弱恒星（K _p> 15.5）在拥挤区域，与光圈测光法相比，效果更好。在这项研究中，我从系统效应和航天器运动效应中去除了约5万条原始光曲线。我最终找到了两个可能发生行星过渡的候选恒星。