Examples of moving artifacts detected by the NELIOTA-DET. Upper figure: an overlay of seven images with a time difference of 2 s and shows a slow fly-by of a satellite in front of the lunar disk. The rotation period of the satellite was such that it could be seen only every two seconds. The missing point is probably due to a temporary bad fluctuation of seeing that did not permit detection. Lower figure: consists of 29 successive images and shows the fast passage of a satellite in front of the lunar disk. The gaps between the lines correspond to the readout time of the camera.