Fig. 5.— Residuals (top) of differential centroid after removing linear motion using three different centroiding methods (ST = synthetic tracking, 2d-G = two-dimensional elliptical Gaussian PSF fitting, s-G = streaked-Gaussian PSF fitting) using streaked images (bottom). We can clearly see the degraded performance with the increase of integration time or the streak length. Note that the images are displayed in log scale, where the negative values are displayed according to the their absolute values to show the noise level.
Fig. 5.— Residuals (top) of differential centroid after removing linear motion using three different centroiding methods (ST = synthetic tracking, 2d-G = two-dimensional elliptical Gaussian PSF fitting, s-G = streaked-Gaussian PSF fitting) using streaked images (bottom). We can clearly see the degraded performance with the increase of integration time or the streak length. Note that the images are displayed in log scale, where the negative values are displayed according to the their absolute values to show the noise level.
Tycho Tracker Demo, Asteroid Detection Using Synthetic Tracking