Based on my own experience with simple camera mounts: Since the satellite passed just as the exposure was started, I suggest that either the camera caused the jump, or Jack was handling the camera/telescope at the time. A periodic drive error has also been suggested, but the track length is only about 0.3 seconds, and I don't think they are that frequent. ----- Original Message ----- ´ > > Can you explain the jaggie in the picture? > rdc ----------------------------------------------------------------- Unsubscribe from SeeSat-L by sending a message with 'unsubscribe' in the SUBJECT to SeeSat-L-request@lists.satellite.eu.org http://www.satellite.eu.org/seesat/seesatindex.html
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